Acanthoclinus quadridactylus (Bloch & Schneider, 1801) Blennius littoreus Forster, 1801Blennius quadridactylus Bloch & Schneider, 1801Taumakoides littoreus (Forster, 1801) The New Zealand rockfish, Acanthoclinus littoreus, is a roundhead of the genus Acanthoclinus, found only in New Zealand from shallow depths to 15 m. Their length is between 5 and 15 cm.