Classification / Names
Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa
Environment: milieu / climate zone / depth range / distribution range
Ecologia
marino batipelagico; distribuzione batimetrica 760 - 1500 m (Ref. 36330). Deep-water
Indo-Pacific: Socotra Island, Mascarene Ridge, western slope off Sumatra I (Indonesia), South China Sea, and Philippine seas.
Length at first maturity / Size / Peso / Age
Maturity: Lm ?, range 30 - ? cm
Max length : 34.0 cm SL maschio/sesso non determinato; (Ref. 36330)
Short description
Chiavi di identificazione | Morfologia | Morfometria
Raggi dorsali molli (totale) : 18 - 21; Raggi anali molli: 17 - 21; Vertebre: 47. Body relatively deep, about 20%SL. Caudal peduncle moderately long (<18%SL). Vertical fin bases almost opposite to each other, the length of bases <20% SL. Head relatively deep and wide (eye width >10%SL). Snout relatively short, length not reaching orbit diameter; olfactory bulbs very big; ethmoid in olfactory bulb region very narrow. Eyes very large. Photophores present on the head, along the rays of the gill membrane and on the surface of the lower jaw seismosensory canals; also on the membranes of A,P, and V. Pyloric caeca < 10. (Ref. 36330).
Life cycle and mating behavior
Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve
Sazonov, Y.I., 1999. A new species of the genus Rouleina (Argentiniformes, Alepocephalidae) from the Philippine Archipelago Seas and a redescription of R. livida and R. nuda. J. Ichthyol. 39(7):479-487. (Ref. 36330)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Strumenti
Special reports
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Estimates based on models
Preferred temperature (Ref.
123201): 3.6 - 7.2, mean 4.9 °C (based on 465 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.5 ±0.5 se; based on size and trophs of closest relatives
Resilienza (Ref.
120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (31 of 100).
