Help me identify this disease - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 7 Old 10-09-2010, 08:34 PM Thread Starter
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Help me identify this disease

My 8 full grown silver dollars are 3+ years old, in a 45 gal freshwater tank (1+ year setup), temp ~80, dual Emporer 280 bio wheel filters, 1-2 inch gravel, 1 live plant, food is Hikari Chichlid gold and occassional blood worms/tetraalgae flakes.

I know they are living on the edge and could stand a larger space to live in, but I change my water every 1-2 weeks simply with a python gravel sucker exchanging the water until the level almost causes the filters to stop sucking (two times).

This keeps the water clear, but occassionally 2-3 of my fish will get puffy, fuzzy eyes with a spot on their side like they rubbed off the skin or something?
It may not be a disease that I'm asking about, but a injury from smashing into underwater heater or leaping into the plastic hood or filter intake since I do scare them once in a while when I get up at night and freak them out.

Also, I might see a stringy thing of growth coming off the eyeball when they get that cloudy/puffy symptom.

I usually just change the water extra and these symptoms go away in a week or so. I want to know what the illness is and what I can do to stop them from suffering.

I have 2 pictures of the spot disease:

Last edited by purplelicorice; 10-09-2010 at 08:47 PM. Reason: adding link to photos
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post #2 of 7 Old 10-09-2010, 09:53 PM
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The bulging eyes is caused by an infection of or behind the eyes or fluid build up behind the eyes. There is no one thing that causes it so unfortunately you have to examine the fish for other symptoms. It can be caused by trauma but it's usually an infection. The wound on the side is definitely infected, is it fuzzy? Fuzzy infections are usually fungal. If it's not fuzzy it's probably bacterial.

Fungal and bacterial infections are secondary infections. They may be injuring themselves because they're over crowded or stressed.

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post #3 of 7 Old 10-10-2010, 10:32 PM
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I would like to see more pictures. To me it looks like the fish is flashing( rubbing against rocks and decor) to remove a parasite. In one picture there appear to be white spots on the fish indicating parasites. They could be flukes, worms, or Ich, or nothing at all. Fish scales can catch light and cause misleading photos. If I could see more I could help rule in/out parasites. If my fish had injuries like that I would treat with melafix to speed healing and prevent infection and inspect everyone of them thoroughly for any signs of parasites.
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post #4 of 7 Old 10-11-2010, 06:42 AM
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Thank You

This thread is very useful to me... I am still a newbie in identifying diseases of my fish...
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post #5 of 7 Old 10-12-2010, 12:35 AM Thread Starter
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I added 2 more photos of my fish here, notice the 2 arrows pointing to what I believe are scratches from running into something. I"m pretty sure this is a flesh wound at this point, how about you?

It's really hard to get Silvers to pose for a photo

Last edited by purplelicorice; 10-12-2010 at 12:41 AM.
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post #6 of 7 Old 10-12-2010, 12:26 PM
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It looks like they might be scraping against something. Fish will do this sometimes intentionally when they have parasitic infections, unintentionally when over crowded.

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post #7 of 7 Old 10-12-2010, 10:09 PM Thread Starter
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I believe it is my fault, I forget they are so skitish and spooked at night when I make a run for the kitchen and turn on a light, I"ve heard them go into a frenzy in there bumping and splashing from being startled after lights have been out for a few hours. I never learn, poor fish :(
One time I was in a weird mood at night, not sure why... I put a headlight on instead of turning on the lights to walk past the aquarium at night to the kitchen and they flipped out when they saw that white led spot moving across the carpet (they feel vibrations when I walk into the room of course).
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