New Zealand brill

The New Zealand brill, Colistium guntheri, is an edible flatfish of the family Pleuronectidae. It is a demersal fish native to shallow seas around New Zealand, at depths of between 27 m and 49 m. It can grow to 91 cm in length and can weigh up to 1.8 kg.

Identification
The New Zealand brill is a righteyed flounder and so has both its eyes on the right-hand side of its body. Its upper surface is dark grey in colour, with its edges and fins almost black; the outer edge of each scale is black, which explains the longitudinal black lines that occur along the length of the body.