Welcome to the world of Largemouth Bass. They generally keep well ONLy with similarly sized fish of their own kind. I caught about a dozen and a half young of year this year when they wer only 3/4 of an inch long. They took baby Brine shrimp right away, and soon after that transitioned easily onto frozen Bloodworms. What started out as 19 baby LMB, quickly turned into 17, and then 15,....12.....7! WTF!!! It was about this time that I noticed the largest of the group had literally DOUBLED in size, and she had eaten over half of her brothers and sisters. Needless to say, only (2) of the original 19 made it, and they were subsequently the largest, most aggressive, and least picky eaters. They are now in seperate tanks though due to their repeated aggresion towards each other. The alternative is to have some dither fish like large shiners or fatheads, and it may keep the LMB preoccupied enough to not mess with one another. Good luck.