So far I've been feeding my reds shrimp and hikari pellets. they love both. I tried smelt a few times, they like it but they are still too small so they end up making a mess leaving shredded scales and flesh all over. From your experiences, what fish can i chop into small chunks and wont mess up the water. In terms of fish fillets or watever. Something that doesnt leave floating oil neither. Thanks a bundle.