Weird question, I know, but I've had my sunfish for close to two years now, and I have never seen them pooping. Other fish...well, they seem to trail some poop all the time. Do sunfish have a particularly slow or fast digestion, or does their poop break off quickly maybe? I've been keeping fish (tropicals mostly) on and off for almost 25 years, and I've never seen anything like this.
What might be relevant: I feed all my fish only two to three times a week, and pretty sparingly. I feed Tetra Color Plus flakes, Hikari Cichlid Gold pellets, freeze dried bloodworms, and occasionally worms, flies, and small pieces of rinsed shrimp or fish.
Edited by Aquarist Fist, 21 October 2017 - 10:17 PM.