interesting 1 of my LMB is like that too... i have 2 of them for about 3 years, was the same size... both use to eat everything i give them, but this year one of them isn't eating that much, it seems like it just eats twice a week, the other one still eat everything everyday... my LMB are in separate tanks...
the one that has problems eating, doesn't seem like it matters what i give him, i try feeding it red worms, pellets, goldfish..if it doesn't want to eat that day, it will just attack the goldfish, mouth it, but won't eat it... it will take the pellet oneday and won't eat anything for the next few days... i don't know what heck is wrong with it... both LMB are still very aggressive, attacks everything, but one of them seems to be on a diet... if anyone knows how to solve this eating problem, let us know...
the one that has problems eating, doesn't seem like it matters what i give him, i try feeding it red worms, pellets, goldfish..if it doesn't want to eat that day, it will just attack the goldfish, mouth it, but won't eat it... it will take the pellet oneday and won't eat anything for the next few days... i don't know what heck is wrong with it... both LMB are still very aggressive, attacks everything, but one of them seems to be on a diet... if anyone knows how to solve this eating problem, let us know...