My Royal L190 seems malnourished and skinny to me. But he is eating, he pounds down fish fillets like you wouldnt believe, he also eats his veggies. I feed him veggies 2 or 3 times a week, and the fish he eats whatever the other fish dont eat. His belly isnt sunken in, but his eyes dont seem to be popping out. Should I be worried? W/C are done weekly. Usually 50% or more considering my high bioload.