ok post a comparison picture would be helpfull if possible and just feed him small enough portions were you wouldnt think he would choke better to be safe then sorry and my guess would be as little guys, they eat mostly "meat"...fish, insects, worms, etc. But they need more and more vegetable matter as they grow. so yes if you could possibly get him to eat the worms sure but as far as crickets im possibly thinking maybe not because it just doesnt seem right