Classification / Names
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Stomiiformes (Lightfishes and dragonfishes) >
Stomiidae (Barbeled dragonfishes) > Melanostomiinae
Etymology: Photonectes: Greek, photos = light + Greek, nekton = swimmer (Ref. 45335); coffea: Named for the shape of the terminal barbel bulb which resembles a coffee bean (Ref. 87305).
Environment: milieu / climate zone / depth range / distribution range
Ekologi
marina; djupintervall 500 - 5486 m (Ref. 87305). Tropical; 31°N - 8°S, 119°E - 169°W
Pacific Ocean: Philippines.
Size / Vikt / Age
Maturity: Lm ? range ? - ? cm
Max length : 14.9 cm SL hane/ej könsbestämd; (Ref. 87305)
Short description
Bestämningsnycklar | Morfologi | Morfometri
Mjukstrålar i ryggfenan (totalt) : 12 - 13; Mjukstrålar i analfenan: 15 - 17. This species of the subgenus Photonectes is distinguished by the following set of characters: dorsal- and anal-fin rays are not covered with black fleshy skin; no pectoral fins; pelvic fins are inserted closer to the caudal-fin base; IV photophores 37-39; and IP photophores begin halfway posteriorly on the isthmus; differs from P. achirus, P. caerulescens, and P. mirabilis by the absence of the blue luminous tissue (vs. present); differs from P. phyllopogon by the number of dorsal-fin rays 12-13 (vs. 20-23) and IV photophores 38-39 (vs. 30-31); differs from P. corynodes by having an elongate barbel with filamentous terminal barbel (vs. short barbel with bifid terminal barbel) and one white luminous shoulder spot (vs. none); differs from P. barnetti and P. albipennis by the barbel with two bulbs (vs. one) and gill-filament length on first branchial arch very long, extending beyond opercular opening (vs. reduced or normal, not extending beyond opercular opening) (Ref. 87305).
Life cycle and mating behavior
Maturities | Reproduktion | Spawnings | Egg(s) | Fecundities | Larver
Klepadlo, C., 2011. Three new species of the genus Photonectes (Teleostei: Stomiiformes: Stomiidae: Melanostomiinae) from the Pacific Ocean. Copeia 2011(2):201-210. (Ref. 87305)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Verktyg
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00302 (0.00117 - 0.00783), b=3.12 (2.89 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.9 ±0.7 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
