my 9in red oscar wont eat anything which is strange because he normally eats like a pig but these last few days he hasn't eaten a thing. I did a 75 percent water change and he still wont eat anything
ya , if his appearance is fine leave him be maybe he ate something that's not digesting to well . clean water and some epsom salt never hurt any fish .
just wait and see , sometimes that's the beggining of something bad . but sometimes they eat to much . they no how to get food from us ,actually there probably the best at it . goodluck with your fish