Author: Regan and Trewavas, 1930
Eustomias tetranema Regan and Trewavas, 1930
Status in World Register of Marine Species:
Accepted name: Eustomias tetranema Zugmayer, 1913 (updated 2009-06-25)
Diagnosis: barbel increasing with growth from as little as 1/3 to a maximum 1/2 of SL; internal core of stem black, external part with a row of black dots and with stripes of colourless reflective material; 3 branches arising from stem, beyond which 2-4 opaque bodies (bulbs) may be present, the terminal end with a small bulb. Pectoral finrays I plus a tiny rudiment; pelvic finrays 7. Photophores of lateral row evenly spaced, not in pairs, 27-31 in ventral row between pectoral and pelvic fin insertions (PV). Colour: head and body black; no round, white spots on sides. Size: to 15 cm.
Habitat, etc.: see family.
Distribution: northward to between Madeira and the Azores (to about 36° N). Elsewhere, southward to the Canaries; also, North Atlantic east of 45° W between about 32° and 38° N.
Eggs, larvae and young stages. No data.
Otoliths (sagitta). No data.