Comprehensive DescriptionRead full entry
| Common names: cornetfish (English), corneta (Espanol), pez-corneta (Espanol) |
Fistularia commersonii Rüppell, 1838
Reef cornetfish, Blue-spotted cornetfish
Extremely elongate, depressed body; a very long tubular snout with a short oblique mouth at the end; snout and jaws relatively robust; space between eyes narrow (< 6.3% of snout length), with longitudinal ridges; minute teeth; no fin spines; dorsal fin sickle-shaped, at rear of body directly over the anal fin, which has same shape; dorsal 15-17, anal 14-16; pectoral rays 15 (rarely 13-14); pelvics on abdomen, well behind pectorals; a forked tail fin with a long central filament; body of juveniles covered with small spines; adults of some species with a row of bony plates in front of dorsal and anal fins; lateral line arched at front half of body, continues out onto tail filament.
Greenish dorsally, shading to silvery white below, with two blue stripes or rows of blue spots on back; tail filament white.
Size: reaches 160 cm.
Habitat: a free-swimming fish often seen over reefs and seaweed beds; it can quickly assume a dark-barred pattern when close to the bottom.
Depth: 0-130 m.
Indo-Pacific in distribution; southern Baja and the Gulf of California to the northern Peru and the oceanic islands.