its a red ear...pumpkin seeds have mouths like an oscar, red ears have a mouth like a bluegill. also note the red slit on its gill. def. a red ear. i used to catch them at about 2" and grow them up to about 8". then they either went in a pond or became catfish bait.
try feeding him small water snail! they love 'em.
try feeding him small water snail! they love 'em.