:blink: my fish is sick, ever since Valentines Day my fish hasn't eaten a thing. He takes a piece of food puts it in his mouth and then he spits it back out. What should I do??? Help guys!!

What kind of fish is it? How big is it? How long have you had it? How big is the tank? What other animals are in there? Do you do water changes, if so, how often? Have you tested the water chemistry?