Bonapartia Cyclothone Diplophos Gonostoma Manducus Margrethia Sigmops Triplophos The Gonostomatidae are a family of mesopelagic marine fish, commonly named bristlemouths, lightfishes, or anglemouths.

However, bristlemouths make up for their lack of diversity with relative abundance, numbering in the hundreds of trillions to quadrillions.

[2] They have a number of green or red light-producing photophores aligned along the undersides of their heads or bodies.

[1] Their chief common name, bristlemouth, comes from their odd, equally sized, and bristle-like teeth.

[4] Bristlemouths contain a pineal organ which functions to detect slow changing ambient light.

[4] Some classifications include the genera Pollichthys and Vinciguerria, but this article follows FishBase in placing them in the family Phosichthyidae.

[3] A minor part of their diet is made up of opportunistic encounters with smaller fish.

However, the most common way that their bioluminescence is used is to signal between fish in the same way people "dance or wear bright colors at the nightclub.