my 24" ate anything that hit the water no matter when it was until he jumped out, but i fed him about once a day. my new lil guy is pretty much the same way and growing fast. he's about 4-5inches and i feed him 4-5 hikari sticks, 2 peices of FD krill twice a day.
mine all eat twice a day atleast unless i am showing off to someone then i will feed them some treats my big one that i adopted took awhile to warm up to the variety that my others get now he eats anything yesterday i pryed my violet goby out of his mouth but it was too late for hector (violet goby) he died later that last night