Creature I came up with for a contest on dA

Avg. Lifespan: 20 years
Species type: Amphibious
Diet: Fish, reptiles, amphibians. Frogs are most preferred.
Behavior: Highly territorial, family unit oriented, nocturnal.
Habitat: Swamplands

Glowsnappers are rather efficient night hunters. Their distinctive glow bulbs serve many purposes. Besides attracting the attention of potential prey, the light they give off casts particular wavelengths of light that, coupled with its peculiar eye structure, bestows immaculate, almost omnidirectional vision of wherever the light touches. Unfortunately, the Glowsnapper is absolutely blind without its light.

Its senses of smell and hearing aren't very developed, but the wattle under its chin is very sensitive to touch, utilized to feel for vibrations through the swamp water to detect prey or threats during day-sleep.

The moss on its back functions as camouflage to hide away during the day, as well as to sneak up on prey. It also works to house a multitude of symbiotic creatures that make their home in the back-moss in exchange for eating any parasites that could cause problems in areas of the Glowsnapper's body that it couldn't reach.

Their mating rituals only happen on new moons, when the swamps are darkest. The males will wave their bulbs about, attempting to put on the most artistic display of light in motion. As a female approaches, the male will dance about her. If she presents her wattle to the male, he will see it as a sign of acceptance, and the mating begins.

Glowsnappers typically conceive 3-5 children from a single mating session, and they are born blind, as it takes several months for the bulb to develop. Once they've come of age to hunt for themselves, (about 5-7 years), they are urged to leave the nest. Glowsnappers don't recognize familial ties beyond immediate children, mates, and (before leaving the nest) siblings. They do not recognize "aunts/uncles" or "grandparents". Other glowsnappers who would technically fit these roles are seen as strangers and are met with defensive hostility, on both ends.