This is a male spotty goby (Laiphognathus multimaculatus) sending one of his babies into the world. Females of this species deposit eggs into the burrows of males, which fertilize and care for the developing young. When juveniles are mature, the males take the young fish into their mouths, dart out of their burrows and spit the babies into the water, sometimes one at a time, sometimes several at once. The action is rapid, the direction and timing of launching babies unpredictable. When the males send the babies out like this, their bodies usually lose the bright coloration of breeding season, becoming relatively drab, though not quite as dull as normal.
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