Here are my baby gars (4") eating bloodworms. I am growing them out along with an ornate bichir to go into my 270g with a super red aro, a severum, a tinfoil barb and 2 motoro rays (also being grown out). I guess it will be a while before they will be safe with the other fish.
at that size i would switch them to feeder rosies (fathead minnows) as they will grow much faster (and generally these fish tend to GARner more nutrition from them) and fit into your big tank sooner. you may also want to experiment with some pellets as well. nice looking fish--
--solomon