IUCN threat status:

Near Threatened (NT)

Comprehensive Description

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  Common names: damselfish (English), castañuela (Espanol)
Azurina hirundo Jordan & McGregor in Jordan & Evermann, 1898

Swallow damselfish

Body slender (greatest body depth 25-33% of SL), fusiform, compressed; head pointed, upper and lower profiles similar; 1 pair of nostrils; bone under eye hidden by scales; mouth small, protrusible, slightly oblique, opens at front; teeth in 2 rows, outer row conical; lower gill rakers 25-27; a single continuous dorsal fin,  XII, 10-12; anal rays II, 11-12; dorsal and anal fins relatively low; pectoral rays 20-21; no projecting short spines at upper and lower base of tail fin;  caudal fin strongly forked; scales are moderately large and rough; 27-31 scales in lateral series; body scaled, head scaled except for area in front of eye and around nostril; basal parts of the median fins scaled; lateral line almost complete, runs along top of tail base almost to tail fin.

Steel blue to olive on upper portion and paler below with orange hue on throat.

Size: reaches 17 cm.

Habitat: in open waters around rocky reefs.

Depth: 5-30 m?

Southern California, Guadalupe Island, Alijos Rocks, the Revillagigedo Islands.


Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Shorefishes of the tropical eastern Pacific online information system. www.stri.org/sftep

Source: Shorefishes of the Tropical Eastern Pacific Online Information System

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