ExploreFish

Bristlemouth

Gonostoma

The Bristlemouth is a small, deep-sea fish with a mouth full of tiny, bristle-like teeth. It spends its days in the dark depths of the ocean, hunting for plankton and small fish.

Habitat: Deep Sea

Appearance

The Bristlemouth is a small, slender fish typically dark or silvery, often with rows of glowing light organs called photophores along its belly. It has a relatively large mouth filled with tiny, sharp teeth, and its eyes can be either small or large depending on the species.

KingdomAnimaliaPhylumChordataClassActinopterygiiOrderStomiiformesFamilyGonostomatidaeGenusGonostoma

Bristlemouth

Interesting facts

Bristlemouths are the most numerous vertebrates on Earth, outweighing all wild birds combined!

Some species have transparent teeth, making them super sneaky when ambushing their tiny meals.

These tiny fish create their own light patterns to talk to each other and trick predators.

They live in perpetual darkness, where the sun's light never reaches and pressure is crushing.

Special abilities

Bristlemouth has special light organs that help them blend in with faint sunlight from above, making them invisible to predators below.

Bristlemouth can migrate hundreds of meters up and down the water column each day, following tiny prey to shallower waters.

Bristlemouth has a very large mouth and sharp, bristly teeth that help them ambush and catch small prey in the dark ocean depths.

Measurements & details

Length: 2-15 cm
Weight: 0.001-0.05 kg
Lifespan: 1-5 years
Swim Speed: 1 km/h
Max Depth: 5000 m
Water Type: Saltwater

Diet & Feeding

These tiny deep-sea fish hunt other small animals in the dark ocean depths.

Primary Foods

copepods
ostracods
amphipods
krill larvae
small crustaceans

Foraging Method

Ambush

Ecological connections

hunts

Copepod

Calanus finmarchicus

actively hunts small planktonic crustaceans

eaten by

Viperfish

Chauliodus sloani

a common predator of bristlemouths in the deep sea

eaten by

Lanternfish

Myctophum punctatum

larger lanternfish prey on smaller deep-sea fish

Traits

Wildlife

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Aquatic

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Migratory

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