Description
Signigobius biocellatus, commonly known as the Twinspot Goby or Eyespot Goby, is a species of Goby that often lives in pairs. Pairs typically share a burrow and exhibit a unique behavior of "hopping" around, with their large, yellow-ringed ocelli (eyes) on their dorsal fins and black pelvic and anal fins resembling pincers. They are known for their pale body with brown blotches and a narrow brown bar through the eye.
Here's a more detailed description:
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Appearance:
Twinspot Gobies have a pale body with irregular brown spots and saddles on the upper half, and three irregular brown bars on the lower half. A narrow brown bar runs across the base of the caudal fin. Their pelvic and anal fins are black with blue spots.
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Behavior:
They often hover low over the sand and signal to each other with their ocelli. They may be aggressive towards other Goby species, but prefer to live singly or in pairs.
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Habitat:
They inhabit lagoons and coastal bays with silty substrate and cover amongst corals and reef rubble, to depths of 30 meters.
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Breeding:
Twinspot Gobies can be bred in captivity. In the wild, pairs work together to create and maintain burrows. The male will sometimes be sealed into the burrow during spawning, and the pair may occasionally return to the burrow for maintenance.
