Who Gives A Fish Forums

Mine got like that when I switched foods. Maybe try something different? I switched to fluval bug bites and he's way more active now.

Could be a bacterial infection. Look for clamped fins or redness. If you see anything, a round of erythromycin might help. Just be sure to remove carbon from the filter first.

Thanks for all the advice, everyone. I'll try fasting him first, then look into salt or meds if needed. Appreciate the help!