Bristlemouth
Cyclothone spp.
Tiny lights, tiny teeth, enormous numbers.
A bristlemouth is a finger-sized fish with a surprisingly toothy grin. Huge swarms of these little glow-fish cruise through the dark ocean every day.
Find this SeaPal in the card gallery
From field guide to game table
Bring this Bristlemouth home
See which ready-to-play decks feature this SeaPal. Try one in the simulator before you buy, or explore each full deck list.
- 2 copies
Ready-to-play deck
Darkness Shroud Deck
Includes 2 cards featuring Bristlemouth.
Quick dive
Creature passport
- Home
- It lives in deep midwater around the world, often hundreds of meters down.
- Favorite foods
- It eats tiny crustaceans and other drifting animals.
- Size check
- Usually under 3 in (8 cm)—shorter than a crayon
Tell-your-friends facts
Four wonderfully wild things
- 1
Scientists think Cyclothone may be the most abundant vertebrate genus on Earth.
- 2
Its fine teeth look like the bristles of a brush.
- 3
Neat rows of light organs run along its belly and sides.
- 4
Even its eggs and larvae drift as part of the plankton.
Ocean superpower
Built to be amazing
Rows of photophores help it signal and hide in the darkness.
Junior scientist tip
What should I look for?
Look for a slim dark body, bristly teeth, and dotted rows of lights.
Grown-up research links
We used trusted science organizations to check this profile.