I have a beautiful Golden Wonder killifish that is constantly skimming the top of the water, he is very rarely below the first couple inches. My problem is he is too fast at feeding time! His mouth is perfect for gobbling up all the pellets he finds, and in most cases gets to them before the other fish. I try hiding them in floating plants, but even then he finds them every once in a while. All my other fish seem to prefer the middle or bottom of the tank. I don't want to overfeed him and have him die. Any suggestions?? Thanks!