Fish
Pygmy Seahorse
Hippocampus bargibanti · also called bargibants pygmy seahorse
Clinging to a single branch of gorgonian sea fan coral, a pygmy seahorse blends in so completely that it remained undiscovered by science until a specimen was found still attached to coral collected for an entirely different purpose.
Overview
The pygmy seahorse, Hippocampus bargibanti, is a tiny fish found on coral reef habitat across parts of the western Pacific. Its extraordinary camouflage against a specific host coral, extremely small size, and accidental discovery story make it one of the most difficult-to-find fish in the ocean.
Hidden in plain sight
So complete is the pygmy seahorse’s camouflage against its host coral that researchers studying the coral itself were the ones who finally noticed it, a discovery that highlights just how easily this tiny fish disappears into its surroundings.
Status
Not Evaluated for conservation status, found on suitable host coral across its range in the western Pacific.
Pygmy Seahorse: common questions
How was the pygmy seahorse discovered?
It was first documented by science after a researcher noticed a specimen still attached to a piece of host coral that had been collected for study, having previously gone completely unnoticed in the field due to its extraordinary camouflage.
How small is the pygmy seahorse?
It is one of the smallest known seahorse species, typically well under 2 centimetres long, making it genuinely difficult to spot even when searching directly.
How does the pygmy seahorse camouflage itself?
It lives on a specific type of gorgonian sea fan coral and closely matches its colour and texture, with small skin bumps called tubercles that resemble the coral's own polyps.
Where is the pygmy seahorse found?
It is native to coral reef habitat across parts of the western Pacific.