One of the biggest down falls of over-feeding is it leads to high Nitrates. I usually give them enough food to feed for about 3 mins twice a day. I have a lemonpeel angel and I feed it once a day and he picks at the food pretty much all day.
from what ive heard fish can get overloaded and EXPLODE!!!!!!!!!!!!!! no j/j lol. sorry that was kinda mean. no fish an get fat though so just watch out for an overly large stomach or a rise in nitrates or ammonia
flame.