anybody else here have a problem with jags being picky eaters. My jags is almost pure black and has grown to about 3.5 inches and stopped for a couple months. He/she refuses pellets or flakes... Just eats frozen beefheart or shrimp. Is my jags picky or are they like this? Is it almost pure black because its a female or just still young? I've had it 5 months bought at about 1.5 inches.