New Zealand black goby

Gobiopsis atrata, the New Zealand black goby, is a species of goby endemic to the marine waters around northern New Zealand where it occurs in tide pools and on reefs down to depths of about 30 metres (98 ft). It lives in narrow crevices and is most commonly seen with its head poking out of its lair to which it will hastily retreat if disturbed. This species can reach a length of 8.5 centimetres (3.3 in) TL.^[1]

New Zealand black goby
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Gobiiformes
Family:	Gobiidae
Genus:	Gobiopsis
Species:	G. atrata
Binomial name
Gobiopsis atrata (Griffin, 1933)
Synonyms
Callogobius atratus Griffin, 1933

1931 illustration of by Louis Thomas Griffin