i have one, got him around 3in. had problems feeding him at first. but he's now an eating machine. my only gripe...i never get to see him eat!!! he only eats with the lights off!!!!ARRGGGHHHH!!! i know he's tearing into the numerous guppies in his tank because i'm restocking his tank every week and his stomach is always buldging in the morning. he's now well over 5in. (i've had him for around 4 weeks) definetly my fastest growing monster...