Brown Spots on Fish

[drm180]

I have a Smith's Damselfish and it is some small brown spots on both sides of it. It looks a lot like the diatoms on the glass. He hasn't acted any differently. The tank is new and he's been in there for about two weeks and I noticed the spots three or four days okay. The tank is cycled, ammonia nitrite and nitrate are all zero and pH is 8.2. Any ideas?

 

[Bifferwine]

Usually common parasites on fish are black or white, not brown. Do you have a pic?

 

[kwsm]

Only thing I can think of that would be brown might be chemical burn. If they're relatively big spots that could be a possibility. If that's a possibility you might want to do a large water change.

 

[drm180]

It's really hard to get a good pic but here one. I'll try again if this doesn't help.

 

[yote]

Are you sure those are not part of the fishes color?

 

[drm180]

I'm pretty sure they're not. They weren't there when I got it and it is getting more as time goes on. It also has a small white patch on its tail. I can't get a good picture though.

 

[rwynn]

Many fish change colour as they age...Domino Damsels for instance go from black to a more brownish tint.

 

[yote]

+1 Rwynn