Can fish have brain damage???

Magic menagerie wrote:

I think it may just be Blackfin... It likes nudging Treasure too... Goldie is
still not eating - not even her fave shrimpies... Just kinda saunters around
in little circles... Can it be so brain damaged it doesn't know to eat
anymore?

I'll do another partial change on the tank. It's cheaper to have the LFS do
the testing. The kits are a bit pricy and they are only a mile away.... If
Goldie doesn't perk up in another dayish, I'll put it back in the bucket and
try to get it to eat... Thanks so far for your help!

What colour is fishies pooh? Also do you have gravel? When fish are ill they
sometimes don't eat. If swallowed a piece of gravel, won't eat also.