I've had two clowns for a little over a month. Both have been doing really well, always eating and swimming just fine. Yesterday I fed them, and the larger of the two did not eat. And today I saw him pooping white, and again did not eat. The other is fine. I'm not sure if he is being picky, because the day before yesterday, I fed them rods frozen food. I was just about to head south and pick up another fish. Should I wait on that until I figure out what's going on with this guy?