Animal Stories - Fish Disease and Treatment


Animal-World Information about: Fish Disease and Treatment

Introduction to aquarium fish diseases and treatments.
Latest Animal Stories
Laura C. - 2014-09-01
I purchased a Raphael catfish about a week ago. I noticed a small white patch, not fuzzy, on his left side. Currently, the tank is being treated with melafix as I recently lost an angel fish that developed white nodules above his eyes and then developed popeye. I QT'ed the angel before it died. Does anyone know what this white patch could be on the catfish? The ph is 7.0. Temp is 78 degrees. The nitrates have been running high from 80 to 160 ppm. I just treated it again with prime and nite-out, as there was a trace of nitrites, below .25 ppm. I also did a 50 percent water change two days ago, vacuumed the gravel. I also added two plants to control the nitrates two days ago. The tank is 55 gallons and contains: 1 Cory cat 1 bumblebee cat 1raphael cat 1 tetra 1 comet gold fish 2 shumbunkins 1 gold gourami 1 needlenose gar 1 tire track eel 1 red tail shark 3 angels Please help! I don't want to lose another fish!

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  • Laura C. - 2014-09-01
    I forgot to add that I have 1 Pleco too
  • Clarice Brough - 2014-09-04
    It could very well be Columnaris, which is very contagious and fast acting, but responds well to antibiotics. It is a very common disease especially for catfish, but with a quick response it can be treated. Read about it and treatments on the fish disease page here: Columnaris.
  • Ian Thomasson - 2020-04-26
    I think it's also worth being concerned about your tetra. As far as I'm aware, all tetra species are schooling fish and need to be kept in groups of 3 at the minimum, 6 or more to keep them healthy.
  • Rhonda Mckean - 2020-04-11
    You really shouldn't mix cold water goldfish with warm water tropicals. For every inch of goldfish they need to be in 2gal. of water per inch. Need to watch your ammonia doesn't go sky high. I dont know how big your goldfish are but with your mixture you are asking for trouble. You have way too many fish in your tank. You have many fish that can get very large.
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Deborah Proctor-Brown - 2013-07-04
We have beeen having a lot of problems with my grandsons new tank. We have had it for about 2 1/2 months now and have lost several fish in it. Some very quickly, and some after about 2-5 weeks of acting strange. I have had my water checked, and adjusted it or changed the water accordingly. Changed my filter packs often, But after water changes on several occ, even partial changes, the fish seem to be gettng shimmys, followed by a listlessness, keeping to bottom of tank a lot except for feeding time, and gradually getting off balance and gradually dying. Could it be something in our water, from the pipes, or do they just have swim bladder disease going on? No red streaks, growths , or fungi present just shimmys and off balance with loss of weight, wasting away and off balance. Only one aquarium so far having this problem out of 4. So seems like a disease of something, more than water problem. Deborah

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  • Jasmine Brough Hinesley - 2013-07-09
    Well, there could be any number of things wrong. First, if you use tap water, do you make sure to put dechlorinator in? Also, make sure to perform water changes regularly, but only change out 1/4 to 1/3 of the water at a time. Have you had all 4 aquariums the same amount of time? If the other tanks are older, they are probably already equalized correctly, with the right amounts of nitrates and other parameters. The new tank may just need more time to cycle and establish itself.
  • Rhonda Mckean - 2020-04-11
    If you have molly's in your tank they are known for shimmy. They need almost perfect water conditions. Do not change your filter packs often. You have to leave them get dirty so you can build good bacteria in your tank. When your tank is crystal clear then you know that your tank is right.
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Kumaresh - 2013-10-18
Hi All, I have a 20 gallon tank with three Gold fish and two Blue johanni cichlids. From two days one of the gold fish is swiming only on top and not eating anything as well not active. I have changed the water around 30% and added fresh water treated with commen salt 3%. After that also Fish is in same condition. I fear a lot that it may die as already I experienced. What should I do to protect my fish?

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  • Rhonda Mckean - 2020-04-11
    Too many fish per inch. Goldfish need 2 gal. of water for each inch of goldfish. What is your water temp.? The goldfish are cold water fish and the other two you have are warm water fish. Your goldfish will get sluggish and not eat well if your water is too warm.
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Lou - 2016-12-26
I have a 55 gallon fresh water tank and I have these bubbles floating in the tank that seem to cover food. They get caught in the filter system. When I placed in a vacation fish food, these bubbles seem to start to cover up the wafer food. Anyone know what this is or who to get rid of it. It has not bothered the fish in the tank yet, but I know it is probably just time.

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  • Rhonda Mckean - 2020-04-11
    Those vacation fish foods are nasty. Do a water change and make sure your air stone isn't turned up too high.
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lisa - 2019-02-01
PLEASE CAN ANYONE HELP.? My Silver Dollar is sick,its swimming around all topsy turby, upside down and mostly sideways. I had some issues with my Nitrates but gradually getting back on track, I MAY have over feed my tank (blood worms and Couchette). I have given the Silver dollar frozen husk-less peas and dont know what else to do. Did another water change and added stress coat. The pet shop thought it may have a head injury, its gills seem more orange than usual. One eye seems bigger (slightly protruding) compared to the other one. ANY IDEAS please? Thanks

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arachni_name - 2018-09-04
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Jason Remigio III - 2018-08-06
I have two goldfish and a bottom tank cleaner. One goldfish diagnosis with fin tail rot for a couple of days. Later dropsy the next couple of days. the next day I treated the tank with melafix and aquarium salt, i removed the active carbon filter, and did a 20% water change of an 80 gallon aquarium. Day 2, my mom took out the fish she claims it was dead. It was still breathing and heavy on day 1 of treatment. I told her it takes months to heal the fish not 24 hours. She took it out of the tank and let it die.

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arachni_name - 2018-09-04
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Nancy Edwards - 2017-07-13
My telescoping Goldfish, who is 1 1/2 years old, and very large (75 gallon tank) has one eye that is protruding out farther than the other. And around the eye socket is purple, like it's bruised. I'm afraid he's will loose his eye. (as in fall out). What can I do?

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  • #1Floridafan - 2018-02-19
    Your Goldfish may have popeye which is nearly 100% fatal to fish, it is probably too late for this fish. Fortunately popeye is easier to prevent than it is to treat.
    I suppose that you are using water out of your tap for water changes and there is nothing wrong with that as long as you treat the water with a de-chlorinator and allowing the water to sit at room temperature for several days before changing the aquarium water.
    Modern water faucets have a mesh to catch any debris that may be in your water pipes, but this mesh filter also aerates the water with extra oxygen. We may think that this is a good thing, but the extra oxygen isn't dissolved oxygen that is beneficial to all aquatic creatures so it collects in their tissues and manifests itself as popeye.
    To see this easily, fill a one gallon jug with water from your faucet and let it sit for a few days and that extra oxygen will collect on the sides of the jug as bubbles. If you've treated the water, you can use the water in the jug as the extra oxygen is gone.
    I use filtered water in my aquarium and I still see the bubbles on the side of the jugs after a couple of days, but I lost some very expensive Discus before I discovered why I lost them.
    I hope that I have been able to help you.
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John Naimo - 2018-03-11
I been having a problem keeping saltwater puffers they seem heathy when I get them eat food and than in about two weeks time they develop these round circles that seem to turn brown and sometimes get fuzzy? No other fish re affected by these symptoms and are fine. Can someone help me resolve this? Thx John

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