Notocirrhitus

Lore & Background

The splendid hawkfish was first formally described in 1889 as Cirrhitichthys splendens by the Irish-born Australian ichthyologist and herpetologist James Douglas Ogilby, with the type locality given as Lord Howe Island. In 2001, John Ernest Randall placed it in a new monotypic genus, Notocirrhitus. The genus name is a compound of noto meaning 'south', a reference to the more southerly range of this species in comparison to other hawkfishes, and Cirrhitus, the type genus of the family Cirrhitidae. The specific name splendens means 'splendid' or 'superb', referring to the bright colouration of this fish.

The splendid hawkfish has a moderately deep body and a slightly elongate snout. There are 25 or more small serrations on the upper margin of the preoperculum, and the gill membrane across the throat does not have scales. The dorsal fin has 10 spines and 12 soft rays, while the anal fin has 3 spines and 6 soft rays. The first dorsal fin ray is elongated, and the uppermost and lower seven pectoral fin rays are elongated and robust. The body is grey on the head shading to white towards the tail. The snout and face are marked with reddish spots which have darkish margins; there are stripes on the nape and dark blotches on the flanks. There are spots on the tail, and the base of the pectoral fin has orange-red spots.

The splendid hawkfish is found in the southwestern Pacific Ocean, recorded only from Australian waters off Point Danger near Coolangatta in Queensland, North Solitary Island and Nelson Bay in northern New South Wales, Elizabeth Reef, Lord Howe Island and Norfolk Island, and the Kermadec Islands of New Zealand. It is found at depths of 7 to 12 m around seaward reefs in the vicinity of coral heads where there is a hard substrate.

Reader's Guide

The splendid hawkfish, as the sole member of the genus Notocirrhitus, represents a distinct lineage within the hawkfish family Cirrhitidae. Its taxonomic history reflects a shift from the broader genus Cirrhitichthys to a monotypic genus, a change made by John Ernest Randall in 2001 based on its morphological characteristics. The genus name itself highlights its more southerly distribution compared to other hawkfishes, a biogeographic distinction that underscores its limited range in the southwestern Pacific. The species is notable for its relatively large size among hawkfishes, reaching a maximum total length of 20 cm, and for its distinctive coloration, which includes grey shading to white, reddish spots with dark margins on the head, and orange-red spots at the base of the pectoral fin. Its habitat is restricted to shallow seaward reefs at depths of 7 to 12 m, where it associates with coral heads on hard substrate. The species has been recorded only from specific locations in eastern Australia, Lord Howe Island, Norfolk Island, and the Kermadec Islands, indicating a narrow geographic range that may be of interest for conservation and biogeographic studies.

Did You Know?

• The splendid hawkfish was first described in 1889 by James Douglas Ogilby as Cirrhitichthys splendens.
• It is the only species in the genus Notocirrhitus, which was created by John Ernest Randall in 2001.
• The genus name Notocirrhitus means 'south' and refers to its more southerly range compared to other hawkfishes.
• Its maximum total length is 20 cm (7.9 in), making it a relatively large hawkfish.