Blue cod, (Parapercis colias), are exclusively found throughout New Zealand in shallow
waters around the rocky coasts of up to the depth of 150 m, though it is far more
common south of Cook Strait. It is blue to bluish green with white toward the belly.
The average size is 30-40 cm, and may grow to 60 cm in length and weigh from 1 to
3 kg. Adult fish are territorial and rarely move long distances. Blue cod prefer
open pebbly or rocky areas and feed on a wide range of small fish and crabs. They
are a prime eating fish with firm white and moist flesh. It’s Maori name is Rawaru.