I have four silver dollars and one angelfish in a 55 gallon tank. I change 35%-50% of the water weekly. For a couple months now, I've noticed two of the silver dollars and the angelfish have fin rot. I treated the tank with a large bottle of melafix. That didn't help, so I treated the tank with maracyn. That hasn't helped either. The fin rot has progressed slowly. The two silver dollars have lost half of their tales and the angelfish has lost membrane between the rays of it's dorsal fin. The other two silver dollars show absolutely no sign of fin rot. I don't know what is causing the fin rot or how to stop it. Any suggestions? Thanks.
Fin Rot
- Thread starter garyroach
- Start date
Sorry I am at a loss. I know that the two most common cause for fin rot are nipping combined with porr water quality.
When did you start to notice this in relation to when you got the fish? Is it possible that it was introduced???
When did you start to notice this in relation to when you got the fish? Is it possible that it was introduced???
I noticed some white discoloration on the tail of the silver dollars about a month after I got them and it has progressively gotten worse over the past two months. I noticed a small hole in the angels dorsal fin after the silver dollars fins started to get ragged around the edges. About a month ago I treated the tank for a week or two with melafix. Since they were no better, I then treated the tank with maracyn. (Yes, I removed the carbon.) No improvement and slightly worse.
I really haven't ever noticed the silver dollars being nippy toward the angelfish. I don't think the tiny hole in the angels dorsal fin between the rays that has grown larger was caused by the silver dollars. The hole started like a pin prick about 2/3 of the way from the body of the fish, not from the edge of the fin.