I feed my fish twice a day. He eats brine shrimp, raw shrimp, cucumber, algae wafers, shrimp wafers, pellets. I've had him for 10 months he's always looked thin. I have Molly's, platys, gouramis, catfish, rams and its a 30 gallon tank. I do water changes every 2 weeks depending on my levels. I did a water change yesterday and all my levels are good.