Not sure on the cichlids but small earthworms will get the cats going fast. The cichlids would probably love em too. Make sure you get em for fish. Don't get em from your yard. Brine shrimp is a good one too.
Chemicals from fertilizers and plain man made crap in the soil. I made that mistake once, and once is all it took. Lost 2 beautiful pictus cats that way. I don't even use fertilizer.
i agree small earth worms work great. i use them with my pike cichlids firemouths and cats. worms are realy high in protien. i usualy get them from my local tackle shop. but if your fish are to small to eat earth worms i d sugest tetra growth flakes
What sort of cichlids are we talking about? Higher protein foods usually put on growth the fastest but in some cases(certain african cichlids) can't handle the higher protein foods.