For my smaller fish I soak some doromin and then crush it between my fingers so it sinks......and my fish totally go nuts for it. they dont go nuts for anything else although they will eat it.
im feeding shrimp pellets, nutafin max catfish, jmc catfish, trout/salmon pellets, doromin, hikari algae wafers, frozen bloodworm, frozen beefheart, frozen lambs heart, frozen brinshrimp, frozen special mix, discus sinkers, small discus sinkers (free from my mates fish food company lol) and a few other little tit bits.