If you've gotten the LMB to take pellets, you can keep up-ing the size of the feed until they are eating Aquamax Largemouth, and get crazy growth.

I've been told that once the LMB get to about 3 lbs., they will need bluegill to continue their growth.

Excerpt from Robert Crais' "The Monkey's Raincoat:"
"She took another microscopic bite of her sandwich, then pushed it away. Maybe she absorbed nutrients from her surroundings."