& Achlya spp. Proper water chemistry is fundamental and imperative to a healthy environment for your fish and will often be the lead cause of disease in a pond. Formalin: Formalin is mentioned as a treatment for sap however, generally speaking, formalin by itself is ineffective against most molds and fungi. You need to be wary of fungal diseases if you have a breeding tank, or if any of your fish are actively breeding in your main aquarium.The main culprits that might target eggs are Saprolegnia and Achyla. Fungus and Finrot are often secondary infections of wounds on the fins or skin caused by : Its a different story in an aquarium though. Once the koi have been taken care of for fin rot using an anti-bacterial drug, a parasite treatment is recommended to ensure optimal recovery. The irritation would lead to them rubbing and flashing, which should tip you off that something is not right and try to bring some relief to the pond fish. These cause white fluffy patches on the eggs, just like they would on the adults (cotton-wool disease).Advertisementsif(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'fishkeepingworld_com-mobile-leaderboard-2','ezslot_21',123,'0','0'])};__ez_fad_position('div-gpt-ad-fishkeepingworld_com-mobile-leaderboard-2-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'fishkeepingworld_com-mobile-leaderboard-2','ezslot_22',123,'0','1'])};__ez_fad_position('div-gpt-ad-fishkeepingworld_com-mobile-leaderboard-2-0_1');.mobile-leaderboard-2-multi-123{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:250px;padding-bottom:10px!important;padding-top:10px!important;text-align:center!important}Damaged or infertile eggs are the most at risk. It is also effective as an anti-fungal. Amazon's Choice in Aquarium Water Treatments by API Size: 16-Ounce 16-Ounce 64-Ounce 8 oz Pattern Name: Fish Remedy Fish Remedy Fish Remedy + ACCU-CLEAR Fish Remedy + LIQUID SUPER ICK CURE Fish Remedy + STRESS COAT About this item Contains one (1) API PIMAFIX Antifungal Freshwater and Saltwater Fish Remedy 16-Ounce Bottle Product may be used when adding fish to an aquarium - particularly . Save my name, email, and website in this browser for the next time I comment. The gills will gradually rot and decay, possibly disappearing completely, which is fatal. The first warning sign that something is wrong in your pond is observing the behavior of your fish. Often the term cotton-wool disease is generalized to include all common fungal infections that affect the skin or gills because they present in a similar way, with fluffy lesions. It is not recommended for those inexperienced with its use. Like all fresh water environments, koi and goldfish ponds are living ecosystems. As with anchor worms, a single dose water treatment such as Aquarium Rescue Parasite Control can be applied to the water to destroy the parasites. At 200x, the filament structure of sap is easily to see and at 400x, the hyphae and spherical ends of sap are clearly discernible. If youre not sure if you have epistylis or fungus, then try raising the salinity of the pond or quarantine tank, and if its a fungus, then it wont be affected; however, the epistylis will definitely be affected by the saltwater. This is a classic presentation of sap that has invaded a bacterial infection of the dorsal fin area of a koi. There are a few things you can do to reduce the chance of an outbreak in your fish tank.We have already mentioned that an unhealthy environment allows pathogens to thrive, they do very well in poor conditions. Copyright 2022 - Fishkeeping World - All Rights Reserved, Robert Woods is the creator of FishKeeping World, a third-generation fish keeper, and a graduate in animal welfare and behavior. Treatment for cotton wool disease in freshwater fish includes salt baths using Freshwater Aquarium Salt or commercially available antifungal treatments for aquarium use. I also use this site as an excuse to spend lots of money on testing and reviewing different aquarium products! They are a nuisance. Some of the most common diseases that poor water quality can lead to include common parasites like Itch, fungi, and Anchor worm, which attach to the body of the fish, causing irritation. Contains all-natural extract from West Indian Bay Trees to help with fungus and cottony growth. Its important to understand this kingdom of organisms so you can help your fish if they ever suffer from fungal diseases. They also have big suckers that are used to attach to the fish. Fish will also be darker in color, become lethargic, and swim abnormally. If symptoms persist after three doses, perform a 25% water change and repeat treatment. Like MG and salt, formalin comes with its own precautions, including limiting its use in warm water, where low oxygen situations may develop. However, sap can also be a primary invader under the right conditions and this is where it gets the reputation as a cold water fungus. Most pond owners are under the impression that fish diseases are primarily introduced and passed on by. 3. Much has been said regarding the importance of using a microscope in the koi hobby. Let us know what happened in the comments below. Physical wounds typically occur due to fighting, but they can also result from handling in a net, parasitic infections, or ulceration from bacterial infections.Though some fungal species will always be present in your aquarium, other species could be added when you introduce new fish or secondhand equipment.This makes quarantining a useful prevention method, which well discuss later.Common Fungal DiseasesAquarium pathogens come in many forms, but fungal diseases are some of the most prevalent.Advertisementsif(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'fishkeepingworld_com-large-mobile-banner-1','ezslot_9',115,'0','0'])};__ez_fad_position('div-gpt-ad-fishkeepingworld_com-large-mobile-banner-1-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'fishkeepingworld_com-large-mobile-banner-1','ezslot_10',115,'0','1'])};__ez_fad_position('div-gpt-ad-fishkeepingworld_com-large-mobile-banner-1-0_1');.large-mobile-banner-1-multi-115{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:250px;padding-bottom:10px!important;padding-top:10px!important;text-align:center!important}There are lots of different kinds that will present in your fish differently. Your email address will not be published. Common Pond Disease Treatments For Fish. This involves performing partial water changes regularly and wiping away excess algae. How to spot that something is wrong in the pond? Melafix Antibacterial Fish Treatment. The combination of stress, suppressed immune systems, and increased spore counts give sap the ability to cause major problems in colder water. Then they will show hollow bellies before eventually developing external cysts or sores. There are many varieties of fish fungus, each with their own causes, symptoms and treatments. Epistylus does not gather organic particles and will remain white. Fungal disease in fish is fairly easy to spot. Next, mix until it has dissolved. We all know that cold water conditions, including dramatic temperature changes, cause great stress on the fish and suppress the fishs natural immune system. Common Parasites. Many plants wont survive high levels of salt and some, wont survive low levels of salt. We offer a huge selection of fish disease treatments for the most common issues. Unfortunately, there are lots of things that can go wrong when keeping fish. New. Symptoms and Treatments. This is why fungal diseases tend to be secondary to another health problem. You can find my reviews here. Once again, poor water quality is detrimental to both the health of your fish both directly and indirectly. Add 1 tablespoon of aquarium salt per gallon of water in the quarantine tank. These fungi have branched hyphae that are irregular in width. This can result in symptoms of not enough oxygen present in the water, and youll find that you fish are coming to the surface to. In fact, fungi are their own kingdom in taxonomic classifications. The filaments are called hyphae and give sap its cotton-like appearance. The sooner you find the disease, the quicker you can act, and the greater the chance of survival for your fish.Below we describe some of the most common fungal diseases that aquarists might have to deal with.Cotton-Wool Disease (Saprolegniasis)Advertisementsif(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'fishkeepingworld_com-large-mobile-banner-2','ezslot_11',116,'0','0'])};__ez_fad_position('div-gpt-ad-fishkeepingworld_com-large-mobile-banner-2-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'fishkeepingworld_com-large-mobile-banner-2','ezslot_12',116,'0','1'])};__ez_fad_position('div-gpt-ad-fishkeepingworld_com-large-mobile-banner-2-0_1');.large-mobile-banner-2-multi-116{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:50px;padding-bottom:10px!important;padding-top:10px!important;text-align:center!important}This is perhaps the most common fungal disease in the aquarium industry, particularly in fresh or brackish water.Cotton-wool disease is caused by fungi of the genus Saprolegnia (a water mold), hence the disease is known as Saprolegniasis.This disease is quite easily identified. So if you notice that your fish is resting on its side with fins clamped together and they dont respond as soon as the food is thrown into the pond, then thats the first sign that something is not right. By keeping new fish in a separate tank for a while, you can observe them over time to check for signs of disease. Ichthyosporidium is a fungus that targets the internal organs of a fish, before spreading externally. Dropsy is also referred to as Pinecone disease, and if your fish have this condition, they will show signs of swelling or lifting of the scales. How to Use Dosage Rates How to Apply Shake well before using. If you maintain your aquarium well, itll be much harder for fungi to infect your fish. It should also be noted that their eyes will bulge frequently. White spots or a cottony appearance are signs of a parasite or fungal infection. Thank you. Therefore it makes it safe for your fish. Quickly controls contagious fungal infections. Avoiding stress and keeping good water quality and low levels of waste/sludge in your pond is key to avoiding and treating fish infections. It is not a fungus, despite its fungus-like appearance. Thereafter, rub some Neosporin on the affected areas to treat the fish. If fish infection does happen, find the best bacteria and fish fungus treatments here. If water temperatures are cold, it is highly likely that you . These fungi have branched hyphae that are irregular in width.They are a further two examples of species that attack internally, focusing on the kidneys, liver and spleen.Advertisementsif(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'fishkeepingworld_com-narrow-sky-1','ezslot_23',137,'0','0'])};__ez_fad_position('div-gpt-ad-fishkeepingworld_com-narrow-sky-1-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'fishkeepingworld_com-narrow-sky-1','ezslot_24',137,'0','1'])};__ez_fad_position('div-gpt-ad-fishkeepingworld_com-narrow-sky-1-0_1');.narrow-sky-1-multi-137{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:50px;padding-bottom:10px!important;padding-top:10px!important;text-align:center!important}Eventually, round yellow or white granulomas present on these organs and the posterior kidney enlarges. Ich-X contains formaldehyde, methanol, and malachite green chloride, which are effective against fungal infections. An example of data being processed may be a unique identifier stored in a cookie. So in the meantime, you need to stop feeding and start improving your water quality by doing a 30% water change. In order to remove fungus gently rub the area with a cotton swab and the infected area must be treated with an antibiotic or antimicrobial cream immediately afterward. However, epistylis is also a possibility. Sap infections are commonly the cause of winter kill. This is one reason why it is vital that you maintain a healthy environment for your fish.An unhealthy fish is at greater risk of developing a fungal infection due to having a weakened immune system. For a treatment to be most effective, you need to spot the problem early, so keeping a close eye on your fish is one of the best things you can do. You also want to monitor water quality by having it regularly tested, and you can also remove the sores with hydrogen peroxide iodine. This fungus can function through a large temperature range (32-95F), which is one reason why it is so prevalent. They secrete digestive enzymes to do this. These are the fungi that you might encounter as an aquarist.Its most common for species to grow as structures called hyphae, which are string-like and can reach a few inches long. A quarterly frequency and grab sample are appropriate for a holding pond at a fish hatchery. Aside from flashing, fish can be seen at the surface gasping for air with clamped fins and white spots resembling white grains of sand all over. The subdivisions of fungi are primarily based on their life cycles, structure, and type of spores. Look out for any signs that could indicate disease. Doing this regularly will help you to spot the problem early.Advertisementsif(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'fishkeepingworld_com-netboard-1','ezslot_27',124,'0','0'])};__ez_fad_position('div-gpt-ad-fishkeepingworld_com-netboard-1-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'fishkeepingworld_com-netboard-1','ezslot_28',124,'0','1'])};__ez_fad_position('div-gpt-ad-fishkeepingworld_com-netboard-1-0_1');.netboard-1-multi-124{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:250px;padding-bottom:10px!important;padding-top:10px!important;text-align:center!important}The sooner you sport the disease, the quicker you can treat it, which gives the treatment a greater chance of success.You are probably watching your fish every day anyway (its likely why you got them in the first place) so this shouldnt add too much time to your daily routine.If you only see the disease on one of your fish, separate it as soon as possible, if you can. Then they will show hollow bellies before eventually developing external cysts or sores.Advertisementsif(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'fishkeepingworld_com-mobile-leaderboard-1','ezslot_19',121,'0','0'])};__ez_fad_position('div-gpt-ad-fishkeepingworld_com-mobile-leaderboard-1-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'fishkeepingworld_com-mobile-leaderboard-1','ezslot_20',121,'0','1'])};__ez_fad_position('div-gpt-ad-fishkeepingworld_com-mobile-leaderboard-1-0_1');.mobile-leaderboard-1-multi-121{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:50px;padding-bottom:10px!important;padding-top:10px!important;text-align:center!important}By the time the disease presents externally, it is probably untreatable, and the fish will likely die. By appearance, sap can be easily confused with epistylus, a freshwater parasite that presents as a white cottony substance growing on the skin of the fish. Depending on the severity of the disease, this could make the whole fish appear a different color. As they say, prevention is better than cure so by regularly monitoring these conditions; you can help avoid these diseases from coming upon fish. The sooner you find the disease, the quicker you can act, and the greater the chance of survival for your fish. Parasites can also attack your fish. taken root, sap can spread rapidly over the surface tissue of the fish. Find many great new & used options and get the best deals for Waterlife Myxazin Fin Rot, Fungus, Bacteria, Fish Treatment 100 250 500 1000ml at the best online prices at eBay! Fish eggs are at risk of fungal infections just like the actual fish. So lets take a closer look at some of the signs and symptoms to look out for and how to treat fish diseases. The mucous layer provides the ability to reject a sap attack by sloughing off a layer of mucous and sending the sap with it. If you suspect that cold water has allowed sap to become a primary invader, attention to the surface tissue of the affected fish is still required as the sap hyphae penetrates the tissue and can allow bacteria to enter the wound site. They are a nuisance. Check out our wide selection of treatments for fungus, bacteria, parasite and ick. MELAFIX fish remedy also promotes regrowth of damaged fins and tissue. Once the fungus has affected these, it can more easily spread to healthy ones. Your email address will not be published. This includes deserts, deep sea, and areas with high levels of salt or ionizing radiation. The best way to prevent your fish from getting infected with diseases and ending up sick or worse dead is to regularly monitor water conditions and take good care of the fish habitat. There are two species in the genus Exophiala that cause issues: Exophiala salmonis and Exophiala psychrophila. There is no guarantee that any fish will be able to survive a fungal disease, even with treatment. The white coloration gradually turns to red, brown or green. This can make it very confusing when you think youve spotted disease in your aquarium. Some fungi require species-specific treatments, so always research the suspected disease thoroughly before trying to eradicate it. Once the fungus has affected these, it can more easily spread to healthy ones.Many egg-laying species of fish take care of their eggs once placed in the tank; part of this involves separating the diseased eggs to protect the rest. 1. Regularly take the time to watch your fish. Sap can also be found in brackish water and moist soil. Fungal diseases are some of the most common examples that you might encounter. Based on their appearance, they are called fish lice. The following is a list of conditions that support the spread of sap: Obviously the underlying theme in the above list is stress and this is the one thing that we need to guard against first and foremost to keep our fish healthy. The disease produces mucus around the gills, making it difficult for the fish to respire. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. It presents as grey or white patches along the skin of a fish or around the gills. So get closer to the fish and inspect them for red sores on fins or mouth as these are signs of bacterial infection. Pond owners should test their pond water at least once a week in the ideal situation. Bacterial infections appear as ulcers, ragged fins, and bloating. In the lower-power micrograph below, you can see the hyphae with the spherical ends. Physical wounds typically occur due to fighting, but they can also result from handling in a net, parasitic infections, or ulceration from bacterial infections. This will give your fish the best chance at survival if they were to become ill.There are many varieties of fish fungus, each with their own causes, symptoms and treatments. The following is a microscope shot of epistylus at 400x: As mentioned, sap is generally a secondary invader; this means something else went wrong to allow the sap to take hold, like a parasite attack or another wound that opened the tissue. Handle formalin with care, its toxicity is well known. Though that sounds bleak, theres plenty that you can do to protect your fish. When purchasing new fish from a store, check the stock for signs of disease. While some water parameters are poisonous if left to get to extremes, high nitrate will affect the fishs ability to absorb oxygen in its blood. So get closer to the fish and inspect them for red sores on fins or mouth as these are signs of bacterial infection. Typically we think of sap as a secondary invader. In treating sap, it is imperative to treat BOTH the sap and the underlying primary cause. About this item. But even the best pond keepers will eventually get a sap outbreak and when this happens, treatment must be quick and complete as this is not a problem that will just go away all by itself. This explains why fish grossly affected by sap appear lethargic and often lose their equilibrium. Different treatments can take varying amounts of time to be effective. Once you have established that theres definitely something wrong in your pond, its time to test the water. API PimaFix antifungal for fish will stop the fungus and promote healing of damaged tissue. Sap starts out either white or grey in color. Only use this product in contained ponds and fountains that have no outflow. MG baths and dips work_ exceptionally well and one treatment will usually solve the problem (assuming any contributing causes are corrected as well). As you can see, sap is one of the major potential problems that we have to be prepared to deal with. Overall this process should last two weeks and is effective and affordable. Look out for infected eggs and remove them with a pipette, needle, or forceps. If you observe any symptoms, shop elsewhere.SummaryFungi are an extremely large and diverse group of organisms. All information, content, materials on this site, or obtained from a website to which the site is linked are provided to you as is without warranty of any kind either express or implied. Ideally, you dont want to ever encounter fungal infections, so preventing them should be a top priority. Obviously, the best cure for sap is prevention. If tissue breaks off, it can spread fungal spores to other fish. Even a stressed fish will be less able to fight off disease. A bacterial infection may cause tail, fin and mouth rot in susceptible fish those who are bullied or injured by fin-nipping tank mates especially when kept in poor conditions. Obviously, the more wide-spread the sap infection becomes, the higher the rate of hemodilution and greater chance that the fish will not recover. If the parameters arent how they should be, you can fix them before your fish fall ill.Pathogens like fungi can enter an aquarium whenever you introduce new fish or secondhand equipment to your tank. The three major groups are multicellular filamentous molds, macroscopic filamentous fungi (mushrooms), and single-celled microscopic yeasts.The subdivisions of fungi are primarily based on their life cycles, structure, and type of spores. Once again, water conditions are key to maintaining good water chemistry. These unwanted invaders have eight legs and rounded bodies. The grey appearance also may indicate the presence of bacteria growing with saps structure. 7.1.3 pH The previous permit required the Facility to monitor effluent pH on a quarterly frequency using an instantaneous grab sample. The first method requires the pond owner to increase the salt concentration of the pond or quarantine tank to about 0.5% over a few days. Aquascape 81038 Ulcer and Bacterial . ), mouth fungus (Cotton Mouth Disease), and Fin & Tail Rot infections. As is the case for treating fish lice, Dimilin is recommended and you can see positive results in just a matter of days. Shop Chewy for the low prices and the best fish health and wellness products! It can infect the skin and gills and is of great importance to the commercial aquaculture market. Let's discuss these fish fungus causes, treatments, and prevention in detail. The mucous coat also provides a natural fungicide at the cell-level. This structure maximizes the surface area to volume ratio of the organism. It is caused by species in the genus Branchiomyces, specifically, Branchiomyces sanguinis and Branchiomyces demigrans which infect carps and pike/tench respectively. You need to be wary of fungal diseases if you have a breeding tank, or if any of your fish are actively breeding in your main aquarium. The second method involves the tried and tested method of dealing with parasites in general and involves Malachite green and Formalin. Diluted versions of formalin products, such ProForm C offer a nice one-two punch where MG takes out the sap and formalin gets the parasites. The medication comes from the leaves of the "Melaleuca" tree. Some things to be on the lookout for include lack of appetite, flashing, open sores, diving, or gasping at the surface. If you only see the disease on one of your fish, separate it as soon as possible, if you can. There are no known cures for viral infections. Your email address will not be published. This will help you to keep track of the water chemistry. It is important to learn about all diseases, so you know how to treat them, and possibly prevent them. Though some fungal species will always be present in your aquarium, other species could be added when you introduce new fish or secondhand equipment. One of the best ways to prevent fungal infections in fish is by feeding them a nutritious diet consisting primarily of high-quality pellets or flakes made for carnivores/omnivores. Damaged or infertile eggs are the most at risk. This condition is also referred to as fish ice. This is why fungal diseases tend to be secondary to another health problem.Even a stressed fish will be less able to fight off disease.Advertisementsif(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'fishkeepingworld_com-leader-1','ezslot_7',156,'0','0'])};__ez_fad_position('div-gpt-ad-fishkeepingworld_com-leader-1-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'fishkeepingworld_com-leader-1','ezslot_8',156,'0','1'])};__ez_fad_position('div-gpt-ad-fishkeepingworld_com-leader-1-0_1');.leader-1-multi-156{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:50px;padding-bottom:10px!important;padding-top:10px!important;text-align:center!important}Individuals with open wounds are the most likely to be afflicted. Helps prevent the growth of fungus on fish eggs prior to hatching. PimaFix fungus remedy treats internal and external bacterial infections in goldfish and koi. I'm here to teach you everything there is to know about fishkeeping. These eggs will not hatch and can infect the other eggs in the tank. While it is rare that sap will penetrate deep into tissue layers, even superficial damage to the fishs initial tissue layers (and particularly the gills) can be deadly. Spend a moment each day watching your fish and look for the common signs of fungal disease. Disability Customer Support Amazon Health Customer Service Best Sellers Amazon Basics Prime New Releases Today's Deals Music Books Registry Fashion . We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. This will be discussed in more detail in the treatment section below. Some scientists estimate that there could be up to 3.8 million species. Quarantining can help to prevent this. MG is not recommended as a pond-wide treatment for sap as the concentration levels needed to kill off sap are too high for a pond-wide treatment to be effective. Just get rid of them, they are practically untreatable.TreatmentWe have mentioned a few ways to deal with specific diseases, but there are a few ways to increase your chances of success.Spend a moment each day watching your fish and look for the common signs of fungal disease. There are a few ways to treat Ich. Use MG with great care. Fishkeeping World is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and any other affiliated sites. Quickly treats fungal and bacterial infections such as cottony growth, fin and tail rot and many more. This can result in symptoms of not enough oxygen present in the water, and youll find that you fish are coming to the surface to gasp for oxygen. Fungi are a large group of organisms. It really only becomes a problem when something has gone wrong with the fish and/or the pond or a condition such as cold water suppresses the fishs immune system. The caution with this approach is that the higher the salt level, the more stress the fish will endure so check carefully on the stability of your fish prior to performing a high-level salt bath. Some will only affect certain species, but others can be a problem for virtually all fish. However, this is rarely the case, and its usually up to whether your fish are healthy. Dropsy To reiterate, Branchiomycosis is very uncommon in an aquarium though. This is perhaps the most common fungal disease in the aquarium industry, particularly in fresh or brackish water.