Calloplesiops altivelis - This exotic fish, also called a comet, is chocolate brown with white spots on the head and body. This species is extremely hardy. When initially introduced into the aquarium this fish is very shy. With time and conditioning, this fish will spend more time in view and some specimens will even beg for food when you approach the aquarium. However, it will spend more time in the open in a dimly-lit tank, at least initially. Keep in a tank with numerous nooks and crannies for it to hide in. Keep only one per tank.