I feed my tetras flake food and sometimes frozen bloodworms. Right now i feed them a good deal (but it all gets eating, maybe 1 or 2 flakes hit the bottom for the shrimp *twirlysmi ) twice a day. Is twice a day good enough feeding, or is there a specific amount of times i should feed them. Also, should i feed till they stop eating, kinda like all they can eat in 10 minutes or will that lead to obese dead fish