The Blue Mandarin, is absolutely stunning in appearance, with their incredibly colored patterns and colors. The Mandarin is full of colorful sweeping shapes throughout its body. The Mandarinfish is a very peaceful creature that likes to hop and hover throughout the aquarium looking for copepods and other live food to feed on. They should be introduced into established aquariums with Live Rock, as this is where their best food source breeds -- copepods. These fish love lots of rockwork to swim around and are very popular for their excellent disposition and coloring. These fish are often confused as Gobies, but their true species name is Dragonet. The males can be distinguished from females by their elongated dorsal spine. They make a great addition to any reef tank.The Dragonet family of fish are small fish that are usually found hopping around reefs. These fish have small protruding mouths designed for capturing microfauna. The Dragonets have two separated dorsal fins with the male Dragonet having an elongated dorsal spine.