Animal Stories - Fish Disease and Treatment


Animal-World Information about: Fish Disease and Treatment

Introduction to aquarium fish diseases and treatments.
Latest Animal Stories
Kim Wardlaw - 2012-02-19
Hi, I purchased 2 catfish about a week ago. When they were both netted out in the shop I noticed 1 of them looked really blood streaked. The assistant just said it was stress but it hasn't got any better. I have noticed that it looks really fat like it's pregnant. It's just really pink and red looking especially round about its fins. Can anybody help me out if they think they know what it could be??? thanks.

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On a need to know basis - 2012-02-16
I had a Red Dwarf Gourami in a ten gallon tank with a tiger barb, a Serpae tetra, and two glo fish. He stopped eating and was a little bit more mellow. At first I didn't think much of it because he is shy, but he started bloating. He rarely pooped and when he did it was Hair-thin white strands. He died two weeks after the symptoms started. All the symptoms sounded like Malwi bloat, but I'm still not sure. What was it?

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  • Jeremy Roche - 2012-02-17
    Did you fish have a reddish ring around anus? The is a key sign of Malawi bloat. The white strands make me think you may have a different type of parasite in your tank. Maybe look into treating tank.
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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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