>
Perciformes/Notothenioidei (Icefishes) >
Channichthyidae (Crocodile icefishes)
Etymology: Channichthys: Greek, channe, -es = an anchovy + Greek, ichthys = fish (Ref. 45335); richardsoni: Named for the Scottish naturalist John Richardson, who described the first species of icefishes C. rhinoceratus and established the genus Channichthys.
Eponymy: Sir John Richardson (1787–1865) was a Scottish naval surgeon, naturalist and Arctic explorer. [...] (Ref. 128868), visit book page.
Môi trường: môi trường / vùng khí hậu / Mức độ sâu / phạm vi phân phối
Sinh thái học
biển gần đáy; mức độ sâu 126 - 310 m (Ref. 90862), usually 126 - ? m (Ref. 90862). Deep-water
Southern Ocean, Sub-Antarctic: Kerguelen Islands.
Bộ gần gũi / Khối lượng (Trọng lượng) / Tuổi
Chín muồi sinh dục: Lm ?  range ? - ? cm
Max length : 37.4 cm TL (female)
Mô tả ngắn gọn
Khóa để định loại | Hình thái học | Sinh trắc học
Các tia vây lưng cứng (tổng cộng) : 7 - 8; Các vây lưng mềm (tổng cộng) : 31 - 34; Tia cứng vây hậu môn: 0; Tia mềm vây hậu môn: 29 - 32. This species is characterized by the following D1 VII-VIII, D2 31-34; A 29-32; pectoral 19-20; bony tubular plates (scales) of the dorsal lateral line 61-78 and of the median lateral line 9-23, rounded separated bony plates in the anterior part of the median lateral line 4-28, as a rule, more than 10; number of gill-rakers on the outer side of the lower part of the 1st arch 6-15. This species is further distinguished by the following: interorbital width narrow, 1.0-1.4 times in horizontal orbit diameter, 5.8-7.5 in HL and 2.0-2.4 in head height at level of middle of eye; eye moderate in size, its diameter 5.2-6.3 times in HL and 2.6-3.0 in snout length; supraorbital outer bony edges of frontals noticeably elevated; snout relatively long, approximately equal to or somewhat shorter than half the head length, 2.1-2.2 in HL; tips of jaws aligned or lower jaw slightly protruding, teeth on symphysis not visible; posterior edge of maxillary extending below 1/3-1/2 of the orbit diameter; a row of rakers on lower part of first gill arch on the outer side of ceratobranchial; pectoral fin extending above to anus or origin of first anal fin ray; first dorsal fin high, 3.3-4.7 times in SL, second and third rays longest; fin membrane of D1 not reaching tips of longest rays, its height about 1.4-1.7 times in height of D1; dorsal fins well separated, posterior edge of D1 fin membrane not reaching first ray base of D2; interdorsal distance wide, 10.9-16.4 times in SL or 1.0-1.9 times in length of D1; bony tuberculation well developed on frontals and lacrimals, D1 flexible spines, branchiostegals, pelvic fins and on bony structures of both lateral lines; absent on maxillary and on anterior part of lower jaw (Ref. 90862).
Body shape (shape guide): elongated.
Found on shelf waters of islands and caught in 2 bottom trawls at depths of 126 and 270-310 m, together with C. rhinoceratus, C. rugosus, C. panticapaei, C. bospori, C. irinae and C. mithridatis. Most specimens were caught at depth of 126 m in an area with abundant benthic fauna and the alga Macrocystis pyrifera. Apparently a primarily piscivorous predator (inferred from the single row of gill-rakers and similar to its congeners). Females mature at about 29-31 cm TL (25-27 cm SL); the post-spawning SGM VI-III is clearly detected in females larger than 31 cm TL and the SGM III - in the smaller, firstly maturing ones. The SGM of the males examined varied from stage II to early stage III in the specimen of 32.5 cm TL. Spawning and pre-spawning SGM were absent. Spawning period apparently takes a place from autumn to the beginning of winter (Ref. 90862).
Vòng đời và hành vi giao phối
Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Các trứng | Sự sinh sản | Ấu trùng
Shandikov, G.A., 2011. Channichthys richardsoni sp. n., a new Antarctic icefish (Perciformes: Notothenioidei: Channichthyidae) from the Kerguelen Islands area, Indian sector of the Southern Ocean. Journal of V.N. Karazin Kharkiv National University, Series: Biology 2008, 7(814):125-134. (Ref. 90862)
Tình trạng Sách đỏ IUCN (Ref. 130435: Version 2025-2 (Global))
Mối đe dọa đối với con người
Harmless
Sử dụng của con người
Các nghề cá: bycatch
Các công cụ
Báo cáo đặc biệt
Tải xuống XML
Các nguồn internet
Ước tính dựa trên mô hình
Chỉ số đa dạng phát sinh loài (Tài liệu tham khảo 82804) |
PD50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high]. |
|
Bayesian length-weight
|
a=0.00132 (0.00060 - 0.00288), b=3.46 (3.28 - 3.64), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Mức dinh dưỡng (Tài liệu tham khảo 69278) |
3.7 ±0.6 se; based on size and trophs of closest relatives |
Thích nghi nhanh (Tài liệu tham khảo 120179) |
Trung bình, thời gian nhân đôi của chủng quần tối thiểu là 1.4 - 4.4 năm (Preliminary K or Fecundity.). |
Sự dễ bị tổn thương của nghề đánh cá (Ref. 59153) |
Moderate vulnerability (44 of 100). 🛈 |