I have a new small striped gar (about 3 in) we got him a couple days ago and he hasn't eaten, we got him straight from import and acclimated to our tank we've put frozen bloodworms, live black worms and frozen krill none of which he ate I know it's not the water cause we've gotten it tested and he's alone (separated by a tank divider in a 55 gal) right now cause we didn't want our two small oscars to stress him out. Is there cause for concern or is he just stressed by the move.