Shorefishes of the Greater Caribbean online information system

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Genus: Ariomma, Ariomas, Driftfishes


All Families:   All Genera:   All Species:

eye large
D1 X-XII (long)
D2 & A 13-16
tail base: 2 keels
top jaw hidden by bone above
teeth minute, none on roof mouth

ARIOMMA

DRIFTFISHES, ARIOMAS

Body oval to slender, compressed; head long; snout short and blunt; eye large, covered with a fatty-tissue lid that extends to nostrils; mouth small, ends before eye, upper jaw almost completely covered by suborbital bone under eye; teeth tiny, conical, in a single row on jaws, no teeth on roof of mouth or on bases of gill arches; operculum thin, with smooth edge; 2 dorsal fins that are scaresly  separated; first dorsal with X-XII long, slender spines that fold into a groove, second dorsal low, 13-16 rays; anal fin similar to soft dorsal fin, III (short), 14-15 rays; pelvic fins inserted under or behind pectoral base, fold into a broad groove along belly midline; tail base short and slender, square in cross-section, with 2 low fleshy keels on base of tail fin; tail fin stiff and strongly forked; lateral line high along back, an extension forwards over eye; scales smooth, very thin and easily shed.

This genus, with six species in this tropical to subtropical, deepwater fishes, occurs in the E and W Atlantic, Indian Ocean and Hawaii. Three species occur in the Greater Caribbean, two of which enter shallow water.