>
Gadiformes (Cods) >
Macrouridae (Grenadiers or rattails)
Etymology: Coelorinchus: Greek, koilos = a hollow + Greek, rhyngchos = jaw (Ref. 45335); nox: Name from Latin noun 'nox' meaning 'darkness', referring to the characteristic dark coloration of the species..
Environment: milieu / climate zone / depth range / distribution range
বাস্তুসংস্থান
সামুদ্রিক সমুদতলে ভাসমান বেনথোপেলাজিক; গভীরতার পরিসীমা 560 - 815 m (Ref. 123356). Temperate
Northwest Pacific: Japan.
আকৃতি / ওজন / Age
Maturity: Lm ? range ? - ? cm
Max length : 44.0 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 123356)
Short description
সনাক্তকারী নির্দেশক | বহিঃ অঙ্গ সংস্থান | মরফোমেট্রিক্স
This species is distinguished by the following characters: external light organ is a short, narrow, naked fossa immediately anterior to anus, its anterior margin falling far short of line connecting inner pelvic-fin bases; underside of head is mostly scaled except for a narrow to moderately broad naked area above the upper lip, and anterior parts of mandibular rami; dorsal surfaces of snout fully scaled; snout long and sharply pointed, its length 62-81% postrostral length (PRL); dorsal profile of snout is slightly concave in lateral view; terminal scute moderately short, diamond-shaped, dorsoventrally flattened, its length 12-17% PRL; lateral nasal ridge completely supported by a nasal bone, moderately convex in dorsal view, giving spade-shaped appearance to snout; anus is slightly separated from anal-fin origin; premaxillary teeth small, conical, arranged in a short, uniformly wide band, none distinctly enlarged (outer series slightly larger); posterior margin of tooth band falling far short of lateral corner of the mouth; body scales are covered with short, reclined, keel-like spinules in widely divergent, coarsely saw-tooth ridges, and every spinule row is complete, extending to posterior scale margin, the spinules in each row greatly overlapping, increasing in height posteriorl, while buttresses are narrowly developed; occipital scales covered with short, erect, needle-like spinules in 4 or more widely divergent, comb-like rows; orbit diameter 45-52% PRL; suborbital width 18-23% PRL; internasal width 27-31% PRL; interorbital width 39-41% PRL; pectoral-fin length 57-69% PRL; pectoral-fin rays i16-i17; transverse scale rows below first dorsal-fin midbase 3.5-4.5. Colouration: body uniformly dark brown, no dark saddles or blotches; lips pale to dusky; oral cavity blackish; gular and branchiostegal membranes are heavily peppered with small melanophores; first dorsal, pectoral, and pelvic fins are uniformly blackish (Ref. 123356).
Life cycle and mating behavior
Maturities | প্রজনন | Spawnings | Egg(s) | Fecundities | শুককীট
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)
Threat to humans
Harmless
Human uses
হাতিয়ার
Special reports
Download XML
ইন্টারনেট সুত্র
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=0.00251 (0.00128 - 0.00492), b=3.19 (3.03 - 3.35), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
ট্রফিক পর্যায়ে (Ref.
69278): 3.6 ±0.5 se; based on size and trophs of closest relatives
স্থিতিস্থাপক (Ref.
120179): নিম্ন/ , সর্বনিম্ন প্রজন দ্বিগুনের সময় ৪.৪-১৪ বৎসর (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (34 of 100).
