Help with fish!

[zinn29994]

I have one fish that is not eating everyone else (7 of them) are eating fine. Haven't seen anything out of the ordinary. Any help will be appreciated. 90 gal 40-50% water change every three days. Ph 6.8 temp 83, no ammonia, no nitrites. It just won't eat.

[albatrozz]

what colour is its poop?

[zinn29994]

Haven't seen any from the fish. I keep looking but don't see any.

[pcsb23]

Check the gill colour and the eye. The gills should be bright red, the eye clear and bright.

Consider increasing the w/c's for a few days and also upping the temp a little for a week or so, say to 86f, and see how it goes.