Animal Stories - Fish Disease and Treatment


Animal-World Information about: Fish Disease and Treatment

Introduction to aquarium fish diseases and treatments.
Latest Animal Stories
Kaya Penelope - 2012-02-09
I previously posted here regarding my Black Moor (a year ago) and at that time knew NOTHING about these awesome fish! I started with a 20 gallon tank and feeding koi pellets. Now Marvin is in a 44 gallon tank and is fed a mix of nori, blood worms, peas, and fish veggie flakes. I make little ice cubes with the above ingredients mixed together and defrost one at a time. Marvin is about 8 inches long with fin and without, about 5 inches. She does have discoloration on her 'butt', not sure what else to call that portion of her body? Unfortunately every time I tried to introduce a new fish, it just didn't work out. One died of fin rot and the other died of anchor worm and infected Marvin as well. At one point she had approximately 35 of those suckers!! Thank goodness she is a larger fish so my husband and I were able to tweeze them off and medicate her after the fact (melafix/salt baths). We change 25% of her water weekly and 75% about every month or so. Here is my new worry, being a fish hypochondriac, today I noticed her floating, like she is nodding off and then 'comes to' and swims or shimmies a bit and then starts to sink a little. I am sure water is good, no diet change and I cannot see any other issue but the discoloration? It is light gold, about the size of a quarter. She is a fat fish, definitely doesn't starve. Help? I wish I could put a picture up here.

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Anonymous - 2012-02-06
I have a black moor goldfish and it is turning white one of its eye is white all over what is wrong with it.

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Shay - 2012-01-28
My work has a 20gal fish tank it has 5 fish in it. One common goldfish has what looks like to be green stuff/ fungus in its eye. Im not sure if its blind. I can also see a tumor or cyst on its side that has burst about 2 weeks ago and then reformed. The fish appears to be swimming on and i don't see any worms or spots on it. Im not sure what to do. None of the other fish have this problem.

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    kathy - 2012-01-29
    Our new Black Spotted Puffer, Tbow's eyes turned cloudy and now green. Any idea what this could be?

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    • Charlie Roche - 2012-01-30
      Scroll to symptoms in the Animal World article Fish Diseases
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    Abhineet Tomar - 2012-01-27
    My fishes, red tail shark, 2 molly, died by fungus. . White spot seen on there body then it difficult to swim for them. . Guy pls tell me the reason and method to prevent. . . . .

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    • Charlie Roche - 2012-01-27
      Look up at this Animal World article and scroll upt to symptoms and the correspondin treatment is listed. I am sorry yur little guys died but now you will have some guidance for next time.
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    Terry Walker - 2012-01-23
    I just got a new tank its 35 gal and my fish are dieing and my tank is not clear it was ok for 1 week than my fish stared to die can you tell my how to save my other fish

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    • Charlie Roche - 2012-01-23
      Fish are dying so there are 3 logical choices. 1. they are aging really fast which is not likely. 2. the tank conditions whether it be chlorine, PH, temperature are off. Check all your tank conditions throughly. Is the substrate been cleaned out. How's the water? 3. The fish have some sort of disease. Animal World Article Fish Disease lists various symptoms that may be occuring in your fish. The corresponding medication/treatment is recommended.
    • David Brough - 2012-01-23
      It sounds like you have 'new tank' syndrome which means the biological filter has not cycled yet. Check for ammonia and nitrite and do large water changes if either is detectable. It takes six weeks to cycle a new aquarium, check here, Aquarium Cycling, for an explanation.
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    annette terenzi - 2012-01-23
    We a 55 gal tank, all fresh water fish. What does it mean when an angel fish twirls around? We had three. One died after twirling around. The other started to twirl now it's fine. We bought some neon fish also . Maybe they brought in a disease?

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    • Charlie Roche - 2012-01-23
      Usually behavior problems are a result of tank conditions, temperature, PH, Chlorine etc. This could also be a condition called Swim Bladder Disease which occurs as a reult of too much food, eaten too quickly. Animal World article describes Swim Bladder and recommended treatment Fish Disease.

    • Charlie Roche - 2012-01-23
      Another article on Swim Bladder Swim Bladder
    • Charlie Roche - 2012-01-23
      One more thing, I fogot, most articles recommend that you stop feeding your fish its regular fish food for a day or two and instead feed it peas to relieve constipation.
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    jodiannc - 2012-01-22
    I have had several different species of tropical fish that have succumed to a puzzling problem. Initially the fish body appears to be hump backed and crooked. Then I notice that they begin to hide and have trouble swimming. They eventually die. Anyone have any idea what could be causing these events?

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    • David Brough - 2012-01-22
      It sounds like one of the symptoms of Fish Tuberculosis. Although there are some treatments for it, most aquarists recommend removing the fish as soon as possible because it is infectious and can spread to other fish. A more complete description can be found here Fish TB
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    Steven Fairchild - 2012-01-10
    My kids fish are already dead, but i was woundering from what. Someone told me it was ich but I bought the meds for it and it didn't help. They had big grayish/whithish circles on each side of them like ther scales were falling off. They looked like their fins where starting to ripped up. They where always hidding and then had no control on how to swim the looked liked floating sardines pointing staight up and down letting the current from the pump just take them around. I want to buy new ones but I dont want this to happen again a life is a life and my kids where crying and if this happens again I would love to know what to do. I never had fish before so I am kid of dumb on this situation any infomation would be greatly appreciated thank you

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    • Clarice Brough - 2012-01-20
      If you have a good aquarium setup, with a good filter and heater, and you cycle your aquarium, then many diseases can be avoided. Cycling is simple, yet understanding it is perhaps the most important thing for successfully keeping fish. You can learn about it here Aquarium Nitrogen Cycle, Cycling Aquarium Guide

      I do not agree that your fish had ich, ich looks like little white spots. A good analogy for ich is it looks like your fish got sprinkled with salt. Big gray/whitish circles indicates a different disease, more likely a fungal or bacterial infection. (Ich is a parasitic infection)

      Check out the fish diseases page above. It has a quick reference chart that lists fish diseases with a quick description of the symptoms... then below that there is an in-depth discussion about each... their symptoms, causes, and how to treat. That should be of great help to you in the future.
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    tiffany - 2012-01-17
    I have an Oscar and its tank is cloudy. I looked and its got these little white things all over the tank. There are some on the fish. They are mainly on the glass and I have no clue what it is.

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    • Charlie Roche - 2012-01-17
      Most often a cloudy tank is a tank condition problem. Has the substrate been throughly cleaned and what is the PH? Check the PH. Scroll up and look at symptoms in this Animal World article and look at what best describes your condition and recommended treatment is listed. Also, found another article which might help White flaky stuff
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