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Gadiformes (Cods) >
Macrouridae (Grenadiers or rattails)
Etymology: Nezumia: A Japanese word that means "mouse"; rara: Name from Latin adjective 'rarus' meaning 'sparsely occurring, referring to the species’ rare occurrence.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
marino benthopelagico; distribuzione batimetrica 621 - 1100 m (Ref. 123356). Temperate
Northwest Pacific: Japan.
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 45.0 cm TL maschio/sesso non determinato; (Ref. 123356)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 2; Raggi dorsali molli (totale) : 10 - 11. This species is distinguished by the following characters: pelvic-fin rays 10-11; short snout protruding scarcely beyond upper jaw, its length 26-28% HL, ventral contour almost vertical in
lateral view; underside of the snout broadly naked; ventral surfaces of head scaled posterior to lateral angles of the snout; the mandibular rami mostly scaled; orbit-preopercle distance 39-41% HL; interorbital width 20-22% HL; pelvicfin length 46-54% HL; length of outer gill slit 13-16% HL; the second spinous ray of first dorsal fin is not extremely prolonged (height of fin 80-98% HL); body scales covered with short, greatly reclined, narrowly triangular spinules in tightly packed, convergent rows or densely scattered over the exposed part; tip of the last spinule in each row extending slightly beyond posterior scale margin; middle row of spinules are not enlarged; scales below the second dorsal-fin origin 9-10; presence of cephalic sensory pores along all canals, but barely discernible; absenc of the prominent dark band encircling the trunk; first dorsal fin uniformly dark (Ref. 123356).
Cross section: compressed.
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Nakayama, N., 2020. Grenadiers (Teleostei: Gadiformes: Macrouridae) of Japan and adjacent waters, a taxonomic monograph. Megataxa 3(1):1-383. (Ref. 123356)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00219 (0.00112 - 0.00429), b=3.20 (3.03 - 3.37), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Livello trofico (Fonte Biblio. 69278) |
3.4 ±0.1 se; based on size and trophs of closest relatives |
Resilienza (Fonte Biblio. 120179) |
Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (Preliminary K or Fecundity.). |
Vulnerabilità della pesca (Ref. 59153) |
High vulnerability (58 of 100). 🛈 |