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Coelorinchus posteromaculatus Nakayama, Prokofiev & Kawai, 2020

Tailspotted grenadier
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Image of Coelorinchus posteromaculatus (Tailspotted grenadier)
No image available for this species;
drawing shows typical species in Macrouridae.

分類 / Names 俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Gadiformes (Cods) 鱈形目 (Cods) > Macrouridae (Grenadiers or rattails) 鼠尾鱈科 (Grenadiers or rattails)
Etymology: Coelorinchus: Greek, koilos = a hollow + Greek, rhyngchos = jaw (Ref. 45335);  posteromaculatus: Name from Latin 'posteromaculatus' for adjectives 'posterior' meaning further back or hinder and 'maculatus' meaning spotted; referring to the species’ characteristic dark blotch on the anterior part of the tail..

Environment: milieu / climate zone / depth range / distribution range 生態學

海洋 深海底的; 深度上下限 100 - 323 m (Ref. 123275).

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Eastern Indian Ocean.

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 22.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 123275)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

This species is distinguished by the following characters: small, intense, longitudinally elongate, lateral, dark blotch on the anterior part of tail; light organ tubular and externally represented by long black streak covered with scales, extending from immediately in front of anus to chest just posterior to isthmus; underside of head is completely naked except for overlapping scales behind lateral nasal ridges; dorsal surface of snout broadly naked along each side of median rostral ridge; snout long, sharply pointed, its length 74–91% postrostral length (PRL), its dorsal profile gently concave in lateral view; terminal scute long, spearhead shaped, dorsoventrally flattened, with length 16–24% PRL when complete; lateral nasal ridge incompletely supported by nasal bone; anus abutting anal-fin origin; premaxillary teeth small, slender, conical in long, narrow, tapered band, and none distinctly enlarged; posterior margin of the tooth band almost reaching lateral corner of mouth; body scales covered with short, erect, slender spinules in widely divergent rows; spinules in each row completely free from one another, forming comb-like ridge; buttresses of spinules are poorly developed; second dorsal fin distinctly lower than anal fin; upper-jaw length 38–43% PRL; preoral length 65–82% PRL; length of gill slit 21–24% PRL; barbel length 9–14% PRL. Colouration: a slightly diagonal, narrow, dark stripe extending from upper margin of gill opening to below first dorsal-fin midbase or beyond; a faint, diagonal, dark stripe extending from pectoral-fin base to above anal-fin origin; median nasal bone is blackish; underside of head generally pale, without small, blackish, hair-like papillae; lips pale to dusky; front of premaxillary ascending process dusky to dark; oral cavity immaculate; gular and branchiostegal membranes heavily peppered; chest dark; first dorsal fin dusky to dark, with second spinous ray prominently blackish; pelvic fin dusky; pelvic fin heavily peppered (Ref. 123275).

生物學特性     字彙 (例如 epibenthic)


Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚


主要參考資料 Upload your references | 參考文獻 | 合作者 : Iwamoto, Tomio | 合作者

Nakayama, N., A.M. Prokofiev and T. Kawai, 2020. Coelorinchus posteromaculatus (Actinopterygii, Gadiformes, Macrouridae), a new species of grenadier from the eastern Indian Ocean. Ichthyol. Res. 67:465-472. (Ref. 123275)

IUCN 瀕危狀態 (Ref. 130435)

  未評估 

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

 





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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 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).
營養階層 (Ref. 69278):  3.4   ±0.5 se; based on size and trophs of closest relatives
回復力 (Ref. 120179):  中等的, 族群倍增時間最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (12 of 100).