i have a little CKaggressor09;1245833; said:you might want to try dropping some suitable sized feeders in the tank overnight and check the results in the morning (generally small comets are slow enough to be an easy meal). I've never seen a knife, even a dying knife, turn down a feeder.

K626;1473049; said:Something I've learned over time and much wasted money:
ALWAYS make the store feed them in front of you! If they don't eat, and they don't have that stuffed clown "belly bulge" DON'T BUY THEM! Let them sit for a few more days before you go home with one, just to pull your hair out.
I do this with all fish I'm looking to buy from any lfs.It's usually worth it in the end, cause if they'll eat in those little tanks there, usually they'll eat in their palace at home.
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