A tiny deep-sea fish with a large mouth full of needle-like teeth and light-producing organs on its belly.
From bristle (stiff hairs) + mouth, describing the fish's characteristic bristle-like teeth and prominent mouth.
Bristlemouths are the most abundant fish in the ocean by number—billions of them live in the deep sea, and their daily vertical migrations (moving up and down the water column) represent one of Earth's largest animal movements by biomass!
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