Just wondering if underfeeding could be a cause of tail/fin biting. I'd assume so, given that it'd obviously stress the poor little guy, which begs another question... Is there a definitive guide on how much to feed bettas? I see advice about giving them enough food to fill the size of their eye, which is the size of their stomach, which seems sound. Then there's the suggestions that say to feed them until they look a little
plump, but not too plump, just nicely rounded. Is there a consensus as to how much is the right amount, or is it just guesswork?