The Niger Trigger has a body that can range from dark blue to blue-green in color. Its tail is crescent-shaped, and may develop streamers as the fish matures. The teeth are usually red. Triggerfish are rather aggressive and are best kept with fish of similar size and aggression. Their diet should consist of vitamin-enriched meaty frozen foods, shrimp, snails (shell intact) as well as the occasional live food snack. The Niger Trigger will not usually eat hard or soft corals and are one of the most popular "Reef Safe" triggers. Always use caution when adding a trigger to any aquarium with invertebrates, small fish or passive fish. These triggers are also comfortable in groups.