what I have set up are fairly noncompetitive mates.
Senegal (has to sniff it out)
False flying fox (only eats a bit cause he has algea pellets all day long)
Syno. Featherfin (I almost never see him eat... but he's still big... he's getting something somewhere...)
Bamboo shrimp (now I have 4~!) and obviously, I don't think they munch on bloodworm....
Candy stripe pleco (actually likes a lil meat, but is small. In fact, I worry about him getting eaten... I'll probably put him in the 10 with the betta once I re-establish it)
and then the 3 eels (got a new one today since my water has gone back to normal with the cloning. This new filter is great. and the mature media added into the stack helps a lot I bet.)
MAN is he a fatty. I've never seen a peacock eel this fat.
But generally, they;'re noncompetitive.... I'd say if during your normal feeding time, if things are hitting the bottom, they'll be ok. If you're that worried, turn of the lights for 10 minutes and then dump in all the food at once.