Redtooth Triggerfish

The Redtoothed triggerfish (Odonus niger) is a triggerfish species indigenous to the tropical Indo-Pacific region, and it stands as the sole member of its genus. It is also commonly referred to as the blue triggerfish, redfang triggerfish, redtoothed filefish, and Niger triggerfish.

Redtoothed Niger Triggerfish typically exhibit a deep purple hue with bluish-green markings on their heads, along with luminous light blue borders on their tail lobes and fins. Like other members of the Balistidae family, their tails are distinctly lyre-shaped. The triggerfish's mouth gives the appearance of grinning and contains tiny red teeth that possess needle-like sharpness. Notably, two of these teeth in the upper jaw are visible even when the fish's mouth is closed. While this species of triggerfish is generally considered peaceful, it may display aggression as it ages and is capable of producing a grunting sound. Additionally, it has the ability to alter its color based on mood, food, feeding habits, and water quality, transitioning from purple to blue and sometimes bluish-green.

With relatively small pectoral fins, the Redtoothed Niger Triggerfish primarily utilizes its dorsal and anal fins to navigate, granting it exceptional maneuverability. These fins also enable the fish to move in a distinctive propulsion style reminiscent of a propeller, making it one of the most peculiar swimming techniques found within the ocean.

These triggerfish species are commonly found inhabiting reef channels or long slopes characterized by strong water currents. To avoid being swept away by these currents, they seek shelter in crevices and between rocks. Additionally, they may reside in shallow coastal waters at depths ranging from 9 to 30 meters (30 to 100 feet). Redtoothed triggers primarily sustain themselves by consuming plankton, often forming schools to feed on zooplankton carried by the currents. They also include sponges in their diet. Moreover, they showcase a carnivorous nature and consume a variety of prey, such as krill, clams, squid, urchins, and small fish.

The distribution of Redtoothed triggerfish spans the diverse 🌊 Indo-Pacific Ocean and 🌊 Red Sea, extending from the east coast of Africa to the Marquesas and Society Islands (🇵🇫 French Polynesia). These fish can also be found as far north as Southern 🇯🇵 Japan and as far south as the Great Barrier Reef in 🇦🇺 Australia.

Distinct pairing behavior characterizes this species, with individuals congregating at specific mating grounds. Male fish establish territories and construct nests for egg-laying purposes. The female fish assume responsibility for caring for the eggs, while both males and females participate in guarding the eggs until they hatch. While they are capable of breeding naturally in the wild, they are unable to reproduce successfully in aquarium settings.