Ive had Black Crappie for about 1 month and htey have grown substantioally (pardon my grammar) but their color is lackign at 5in long. I have snails, feeder guppies, earthworms, brine shrimp flakes and a high protein color enrichment flake. The fish looked washed out as a sign of improper diet or bad water quality. But considering they've each grown 1-3" why would this happen? And I feed them 1-2 times per day and sometimes leave the light on all day and sometimes not and their color stays the same.