The Western Spiny Seahorse is found only in Western Australian waters between Shark Bay and the Dampier Archipelago.
Distribution, ecology and habitat:
Endemic to tropical waters of Western Australia, from Shark Bay, north to the Dampier Archipelago; benthic in inshore algal reefs from about 10 to more than 30 m.
Height to 160 mm.
Food and feeding:
Unknown Like other seahorses, this species presumably feeds by sucking small crustaceans and other planktonic organisms into its mouth.
Reproduction and early life history:
Reproduction: Sexes separate, reproduction a form of viviparity or ovoviviparity, whereby the males give birth to tiny independent young The female uses an ovipositor to transfer her eggs into an elaborate enclosed pouch under the abdomen of the male The male not only fertilizes the eggs inside the pouch and provides physical protection for the developing embryos, he also osmoregulates and aerates the embryos and may provide some nourishment until the offfspring are born.