Southwest Pacific: Solomon Islands and Australia. Records from southern Mozambique and Natal, South Africa are misidentifications of Hippocampus camelopardalis. International trade is monitored through a licensing system (CITES II, since 5.15.04) and a minimum size of 10 cm applies.
In shallow, weedy inshore areas and Zostera seagrass beds; also on sponges. Also under jetties on holdfasts of kelp, and on other man-made structures such as shark nets. Diurnal and site faithful.
Ovoviviparous. The male carries the eggs in a brood pouch which is found under the tail.
Hippocampus novaehollandae Steindachner, 1866 (misspelling)
Hippocampus novaehollandiae Steindachner, 1866