Very sick fish, UNKNOWN cause?! Help!!

  • We are currently upgrading MFK. thanks! -neo

Janeprovidence

Feeder Fish
MFK Member
Apr 6, 2011
6
0
0
Minnesota
I have a rainbow shark in my tank that has been very sick for a few weeks, it started off with him staying in the corner at the top of the tank. He would just stay there and float. Now i'm noticing blue/green coloring around his gills, parts of his body are lighter, and his eye is clouded.

I have been treating my tank with melafix, and a parasite killer but nothing is working!

what could be wrong with him?
 
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