Just a couple of questions about the Gar!

I just bought a 3.5 inc asian Gar from R.M.S. and i heard they grow too about 1 1/2 foot i got a 220 for it but i was wondering besides guppy and molly babies what i could feed him because i had to take him out of the breeding tank because my dad didnt like the fact that all his babbies were getting eaten so i had to put him in a 75 gallon tank with like 20+ medium sized angels and 1 5 in red zebra ciclid and i wonderd what i should feed him since he doesnt have the small babies to eat now?
I would like to know your input on what i should do with it because i do like the species and this is my first fish that could grow really big. All the tanks are at 79 F
normal nitrate and nitrite and amounia and i do 2 50% waterchanges since thier is so many fish in their.Any information is good information.
Thanks Johnny

I have been looking at some posts and they said chuncks of earthworms might work any ideas ?

Thank you very much for your information i will give it a try

I have another ? should i go buy the other gar that was in the same tank with him for just another fish in the species or will he do better alone ? as the only one in of his species ior her not sure what sex it is