Anoplogaster, commonly known as fangtooth fish, are deep-sea dwellers found in tropical and temperate oceans. They have large, fang-like teeth, a robust body, and can survive extreme pressures. Despite their fierce appearance, they are small and primarily feed on other fish and invertebrates.

Anoplogaster spp., commonly known as fangtooth fish, are native to the deep ocean waters of the Atlantic, Indian, and Pacific Oceans. These species are distributed globally but are primarily found in tropical and temperate marine regions.

Anoplogaster spp. inhabit deep-sea environments, typically at depths ranging from 200 to 2,000 meters (656 to 6,562 feet). The water temperature in these regions is cold, often between 2 to 4 degrees Celsius (36 to 39 degrees Fahrenheit). The pressure is extremely high due to the depth, and there is minimal light penetration, making the environment very dark.

Fangtooth fish occupy a niche as carnivorous deep-sea predators. They have adapted to life in the abyssal zone, where they hunt smaller fish and invertebrates. Their large mouths and sharp teeth are well-suited for capturing prey in the low-light conditions of their habitat. Anoplogaster spp. play a crucial role in the deep-sea food web as both predators and prey for larger deep-sea organisms.