Hymenocephalus nascens, Nascent membranehead

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Hymenocephalus nascens Gilbert & Hubbs, 1920

Nascent membranehead
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Native range | All suitable habitat | Point map | Year 2050
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Hymenocephalus nascens   AquaMaps   Data sources: GBIF OBIS
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Image of Hymenocephalus nascens (Nascent membranehead)
Hymenocephalus nascens
Picture by Graham, K.

Classification / Names Tên thường gặp | Các synonym ( Các tên trùng) | Catalog of Fishes(Giống, Các loài) | ITIS | CoL | WoRMS | Cloffa

> Gadiformes (Cods) > Macrouridae (Grenadiers or rattails)
Etymology: Hymenocephalus: Named for its transparent membrane-like head covering (‘‘hymen head’’) and fragile nature of head bones (Ref. 100825).
More on authors: Gilbert & Hubbs.

Environment: milieu / climate zone / depth range / distribution range Sinh thái học

Biển Sống nổi và đáy; Mức độ sâu 366 - 1000 m (Ref. 35908). Deep-water

Sự phân bố Các nước | Các khu vực của FAO | Các hệ sinh thái | Những lần xuất hiện | Point map | Những chỉ dẫn | Faunafri

Western Central Pacific: South China Sea off Hong Kong, through Philippines and Indonesia, off northern Australia, to New Caledonia and New Zealand.

Bộ gần gũi / Khối lượng (Trọng lượng) / Age

Maturity: Lm ?  range ? - ? cm
Max length : 18.2 cm TL con đực/không giới tính; (Ref. 97189)

Short description Hình thái học | Sinh trắc học

Các tia vây lưng cứng (tổng cộng): 2. This species is distinguished by the following characters: pelvic rays usually 12-14 (elsewhere 11-13); total gill-rakers first arch (outer/inner) 17-22/23-28, second arch 22-28/22-26; no chin barbel; snout length 22-31% HL; orbit diameter 29-40% HL; suborbital width 10-14%HL, interorbital width 24-29%HL; most of the orbit, upper surface of snout, sides of head and trunk silvery or pale, ventral aspects of heed and trunk black; a prominent midlateral stripe of silvery (when fresh) or brownish (preserved) pigment running along trunk and tail (Ref. 97189). Additional distinguishing characteristics: pectoral fin rays 13-16; projecting snout, 20-26% HL; infraorbital width 11-16% HL; moderately long preopercular supporter, with obtuse angle at rear margin, 4-9% HL; ventral striae reaching to ½ distance from pelvic fin bases to periproct; otolith has moderately high predorsal lobe, with colliculi separated, closely placed across collum with a tendency to joining in large individuals, terminating at some distance from anterior and posterior rims of otolith; otolith length to height (OL:OH), 1.1-1.2; total colliculum length to pseudocolliculum length (TCL:PCL), 1.8-2.4 (Ref. 98298).

Sinh học     Tự điển (thí dụ epibenthic)

A benthic species found on the continental slope (Ref. 75154). Maximum depth from Ref. 106682.

Life cycle and mating behavior Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Các trứng | Sự sinh sản | Ấu trùng

Main reference Upload your references | Các tài liệu tham khảo | Người điều phối : Iwamoto, Tomio | Người cộng tác

Iwamoto, T. and N.R. Merrett, 1997. Pisces Gadiformes: Taxonomy of grenadiers of the New Caledonian region, southwest Pacific. Mem. Mus. Natl. Hist. Nat. (176):473-570. (Ref. 35908)

IUCN Red List Status (Ref. 130435)


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