i have a gar as well, a hujeta.....and he is a predator! will go for any fish small enough to fit in his gullet.....hes taken feeders half his size without much trouble....and my gars only 5" long....he tries to get a hold of my buffalo head all the time, but he hides in rocks and in the sand...if i were you, id get that juvi you got out of there because if the gar got him once, he'll get him again...next time that gar mite make a meal out of him.....keep in mind my tank is a 135 gallon long....so lots of room for all to roam but the gar is a natural killer, no smaller fish is safe......however....i just recently got my gar to eat pellets and freeze dried foods...its very hard to do i hear and i wasnt even trying really.....i just didnt put any feeders in for a long time because my lfs was out and i coudnt get my guppies or convicts to breed during that time lol...... so the problem sorta solved itself.....but yea that gar gettin ahold of that guy probly will be the death of him stresswise unless you get the juvi into his own tank away from any larger fish that may attack him, for food or otherwise....thats just my opinion though