Animal Stories - Fish Disease and Treatment


Animal-World Information about: Fish Disease and Treatment

Introduction to aquarium fish diseases and treatments.
Latest Animal Stories
Aaron Maher - 2012-09-24
How do I tell the difference in the type of disease? My albino clownknife just got things on him that look like oversized paracites and they are only on him?

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  • Clarice Brough - 2012-09-24
    Not sure what your fish has, but some of the most common diseases are either Ich (which is a parasite that looks like somebody sprinkled the fish with salt) or a fungal infection (which can look like little cottony patches). A larger parasite could be Argulus, or fish lice. I'm glad you are only seeing these things on one fish, but if it is a parasite, or any other disease, it can spread.



    See if you can't narrow down what the problem is. Look at your fish very closely. then check the information on the page above again. The chart near the top of this page gives a quick look at the types of symptoms (what to look for) and what that diseases is. The detailed information for each disease, which is further down the page, describes the symptoms in more depth as well as treatments. Good luck!
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Marinho - 2012-09-21
Hello I have a 60Lt tank, 5 pristella maxillaris, 15 (began with a couple) apistogramma agassizi, 3 corydoras (dwarf maybe?). The problem is one of the apistos has become shy, pale and secluded under a rock, I don't think it's eating a lot. No other symptoms I can describe. The other problem is with one of the pristellas, it also is pale, and has a strange redness and maybe swelling on the bottom half of the tail fin. It is swimming as if it has a weight on the tail fin, so it swims with an angle (head up, tail down). Two days ago my apple snail died, don't know if this is related. Thanks for any feedback.

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  • Jeremy Roche - 2012-09-21
    Check your amonia levels.  Amonia will tend to make the fish turn pale.
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Simon - 2012-09-17
I have 20 discus in a 800 litre tank, i have had some of them for about 8 years. i recently introduced 1 new fish. I should have but didnt quarantine it. and as a result i think an infection in my tank. I have lost 4 fish and a few more are nt looking good. I infection looks like a very fine white section on the fishs body, on some fish it is very hard to see. Some fish are acting normal, but the others are schooling in the corner. Have treated with salt 2grams per litre. They started lto look good then went back wards, currently treating with tri sulfa.. Have you any advice

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  • Jeremy Roche - 2012-09-17
    Can you give a better description of what the fish look like and acting.  You can send a picture of the fish through and I will see how I can help!
  • Jeremy Roche - 2012-09-17
    There is some great info in the disease section of Animal World that can help get you through this!  What temp are you treating the tank at?
  • Clarice Brough - 2012-09-17
    Wow, that's frustrating. It does sound like a fungal infection, and the tri sulfa should help. But treating your whole tank is very difficult. Maybe set up a smaller hospital tank, as that is less water to have to medicate and you can keep a closer eye on the infected fish. Might also want to try another medication if you don't see results from the tri sulpha. Sulphur is a common treatment for fungus but there are other treatments that are also very good like Maracyn and Methyl Blue. Then there are others that include antibiotics to treat secondary infections (bacterial).
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Mark - 2012-09-10
I have goldfish that I bought 1 year ago for 17 cents each. They have grown to about 4 inches long. I bought a new larger tank and after 24 hours in the new tank they are not doing well. I am afraid they are dying. Any suggestions?

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  • Jeremy Roche - 2012-09-11
    Test the water.  Did you transfer the water from the old tank.  Water condition changes can be tough on fish.
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Jay S. - 2012-09-07
I have a Red Shoulder African Cichlid that is exhibiting many weird signs and I can not figure out what is wrong with him, other tank mates are unaffected. One day he was acting completely normal and fine, the next he was no longer swimming around and sitting on the bottom grasping for air. He would sway side to side and often begin to float upside down . The next day I noticed that his head seemed to be swollen with a slight greyish black color on parts of the area. He began to swim fine at times but others he floats inverted and just coasts around. Then yesterday he had about a 1.5' white 'string' hanging where his excrement usually comes out. I have contemplated taking him out many times but at times he still appears to exhibit signs of recovery. Please help

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  • Jeremy Roche - 2012-09-08
    sounds like he may be constipated.
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Rachael - 2012-08-18
I purchased 2 oscars at the same time about 6 mos. ago. One oscar has grown to 6 in the other is still about 2 in. (little guy just won't grow!) Over the past week little oscars scales have fallen off on both his sides about the size of a nickel,and now he has 'blisters' on the 'meaty' areas. removed little oscar to seperate tank added salt 1 tsp/ 5gl water. he is more active now and eating, but what happened to him? He still has the blisters and raw skin areas but his activity has improved. HELP?!

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  • Rachael - 2012-08-18
    BTW big oscar is healthy and happy.
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photosbycarlo - 2012-08-14
I have a female betta that was brutally attacked by a male. I removed her ASAP and she recovered her loss fins, but during the process developed white cauliflower growth (lymphocystis?). I haven't seen many photos like this one. I want her condition to improve, but can't decide if I leave her in the small 5.5 gallon tank and risk infecting the other two fish in there too (botia and dwarf pleco), or do I just leave her in a betta bowl and hope for the best. I also have some live plants in the tank too, so would rather not just dump antibiotics (for secondary infection) and risk killing them as well. Any suggetions?

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  • Charlie Roche - 2012-08-14
    Remove her into a quarantine tank now.  She doesn't need any additional stress and if you have to medicate - you don't want the others taking it.
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Dave - 2012-07-02
Ever since I got my aquarium, fish have been dying at the rate of 1 every two weeks. And in the past 48 hours 5 of them have died. I'm not overstocked, filter works fine, water changes every week. The fish look discolored sluggish, not eating, don't swim much. No outward signs of a disease any ideas??? Hope you can help.

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  • Jeremy Roche - 2012-07-03
    Ammonia spikes will discolor.  check levels.
  • Mike - 2012-07-28
    Probably the H2O such as PH, tempature, alkalinity, softness/hardness, and nitrite. Has your tank cycled correctly?
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Devin Quinones - 2012-07-26
About a month or 2 ago I noticed a little bubble on one of my mollies. It was a light red and was small on its neck. I asked around and couldn't find out what it is. It got smaller and bigger on a dally basis and after a few weeks it started getting bigger and smaller on a larger Scale. It then spread and had smaller ones on its mouth and a clear bubble that covered much of its gill. So out of curiosity I touched the bubble and it seamed to open up. After a few days it looked like it got better. So I touched the other ones and it looks to me like its part of the skin because it's the color of the skin. Please help I don't know what it is and it's worrying me. The tank is a 5 gal and there's 2 mollies in it /the other is not infected/ I clean it and change the filter once a month. I have been using API fungus cure/ no noticeable affect

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lisa - 2012-07-24
I have a strawberry tetra. I've had it for probably 4yrs. Over the last 2 months it has formed some type of abnormality. It looks almost as if it's intestines are protruding or maybe some type of clearish, bubbleish protrusion. Is this what is called lymphocytis? No other fish are showing any signs of anything and the fish in question, other than the growth appears to be fine. Could this be something dangerous or contagious?

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  • Jeremy Roche - 2012-07-25
    Could be a parasite infection or thread worms.  I would quaranteen it.
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