Common in the Solitary Islands Marine Park. Endemic to Australia it is found around the southern half of the continent from southern Queensland to around Perth in Western Australia, including Tasmania.
Frequents inshore waters in areas of algae or seagrass. Small size and cryptic colouration ensure it is rarely seen.
Specimen pictured found in tidal pool on rocky headland, approximately 20 mm long. Colouration is variable with females brown, green, yellow or whitish, males may be pale white to blue. Ovovivaparous, the male carries the eggs in a brood pouch under the tail. Grows to about 10 cm.