great job man, nice fish! those have to be some of the smallest CBGs i have ever seen! probably right around the size (if not a bit smaller) than the 2007 import. i would watch those tankmate gars as they won't hesitate to eat them given that size discrepancy...you don't want expensive feeders!
be sure to maintain stable pH, and i find the aragonite cichlid sand to be best for that. get them eating soon (usually rosies or the like are good to bulk up/start up) and growing and they will reach more stable size for you. best of luck!--
--solomon