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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.
Environment: milieu / climate zone / depth range / distribution range
Sinh thái học
Biển Sống nổi và đáy; Mức độ sâu 621 - 1100 m (Ref. 123356). Temperate
Northwest Pacific: Japan.
Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm ? range ? - ? cm
Max length : 45.0 cm TL con đực/không giới tính; (Ref. 123356)
Short description
Khóa để định loại | Hình thái học | Sinh trắc học
Các tia vây lưng cứng (tổng cộng) : 2; Các vây lưng mềm (tổng cộng) : 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).
Life cycle and mating behavior
Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Các trứng | Sự sinh sản | Ấu trùng
Nakayama, N., 2020. Grenadiers (Teleostei: Gadiformes: Macrouridae) of Japan and adjacent waters, a taxonomic monograph. Megataxa 3(1):1-383. (Ref. 123356)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Các công cụ
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00214 (0.00109 - 0.00421), b=3.20 (3.03 - 3.37), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Mức dinh dưỡng (Ref.
69278): 3.4 ±0.1 se; based on size and trophs of closest relatives
Thích nghi nhanh (Ref.
120179): thấp, thời gian nhân đôi của chủng quần tối thiểu là 4.5 - 14 năm (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (35 of 100).
