The above picture was 2 days ago
The picture below is from today
One of my corys have a strange growth on the side of it. I am not sure if it is a cut/bite mark, or a fungus. I am looking for advise.
I have a 20 gallon long tank, I switched to sand last week as one of my 3 corys died. I checked closer and there barbels are gone. I recently got 9 new fish all at once, so that may have caused a change. I originally had 2 corys, and 2 gouramis, I now have 6 coys, 2 gouramis and 5 Danio pearls.
Ammonia 0 ppm
The effected cory appears to not be that reactive. When I moved something next to it it wouldn't swim away. Eventually it swam to the corner and two other corys where swimming and pushed it trying to get food nearby. It rolled on its side then slowly got back up. Currently it is spending most of its time resting on decoration near the top of the tank. Any advise will help, Thank you
Edit, I noticed that this white clump woud disappear, just recently it started to swim around frantically upside down before floating at the top. The white clump is gone and now a large red spot is there, blood? I moved it to a bucket with an aerator and it may be dead. I think it has a small worm hanging out from its side away from the wound but I can't tell, it may just be skin peeling. Do I need to treat my other fish now?