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Perciformes/Notothenioidei (Icefishes) >
Channichthyidae (Crocodile icefishes)
Etymology: Chaenodraco: Greek, chaeno = to yawn + Greek, drako = dragon (Ref. 45335).
Eponymy: Dr Edward Adrian Wilson (1872–1912) was an English physician, polar explorer, painter and natural historian. [...] (Ref. 128868), visit book page.
More on author: Regan.
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
marino bentopelágico; rango de profundidad 200 - 800 m (Ref. 5200). Polar; 60°S - 78°S, 180°W - 180°E (Ref. 5200)
Southern Ocean: Circum-Antarctic on Antarctic continental shelf. Northernmost records from vicinity of South Orkney Islands and Antarctic Peninsula.
Longitud en la primera madurez / Tamaño / Peso / Edad
Madurez: Lm ?, range 23 - ? cm
Max length : 43.0 cm TL macho / no sexado; (Ref. 5200); common length : 30.0 cm TL macho / no sexado; (Ref. 2805)
Espinas dorsales (total) : 5 - 8; Radios blandos dorsales (total) : 38 - 42; Espinas anales: 0; Radios blandos anales: 32 - 36. Supraorbital ridge not crenulated. Middle lateral line restricted to caudal peduncle; lower lateral line originating from in front of anal-fin origin to above sixth anal ray. Maxilla extending to below anterior third of eye. Opercular bones with 2 upper and 3 lower spines. Preopercular-mandibular canal not joined to temporal canal. Pelvic fins extending beyond anal-fin origin. In life, pale grey, whitish ventrally. Differentiated by the dorsoventrally oval shape; the prominent distally rounded rostrum, pseudo-rostrum and pseudo-antirostrum; the clearly defined excisura ostii and pseudo-excisura ostii; the acutely constricted collum; and the well developed colliculli.
Ontogeny: The excisura ostii and the pseudo-excisura ostii become deeper and the crista inferior becomes less distinct with an increase in the fish size.
Body shape (shape guide): elongated; Cross section: oval.
Common in shallower waters of the continental shelf, especially on banks less than 250 m deep in areas where local upwelling increase food supply (Ref. 6390). Postlarvae and pelagic juveniles are also found in the upper 100 m (Ref. 5200). Food consists of fishes and krill. Spawn in winter (Ref. 6390). Larval pelagic phase is long (Ref. 28915). Prey to penguins and seals (Ref. 6390). Utilized as a food fish (Ref. 5200).
Iwami, T. and K.-H. Kock, 1990. Channichthyidae. p. 381-389. In O. Gon and P.C. Heemstra (eds.) Fishes of the Southern Ocean. J.L.B. Smith Institute of Ichthyology, Grahamstown, South Africa. 462 p. (Ref. 5200)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Amenaza para el ser humano
Harmless
Usos humanos
Pesquerías: escaso valor comercial
Herramientas
Informes especiales
Descargar XML
Fuentes de Internet
Estimaciones basadas en modelos
Temperatura preferida (Referencia
123201): -1.8 - 1.4, mean -0.8 °C (based on 825 cells).
Índice de diversidad filogenética (Referencia
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00098 (0.00057 - 0.00167), b=3.53 (3.38 - 3.68), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Nivel trófico (Referencia
69278): 3.2 ±0.2 se; based on diet studies.
Resiliencia (Referencia
120179): Medio, población duplicada en un tiempo mínimo de 1.4-4.4 años (Fec = 393-862).
Vulnerabilidad pesquera (Ref.
59153): Low to moderate vulnerability (33 of 100).
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Vulnerabilidad climática (Ref.
125649): High vulnerability (64 of 100).
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Nutrientes (Ref.
124155): Calcium = 24.1 [13.1, 52.5] mg/100g; Iron = 0.394 [0.164, 0.807] mg/100g; Protein = 16.6 [14.9, 18.4] %; Omega3 = 0.238 [0.110, 0.509] g/100g; Selenium = 23 [8, 56] μg/100g; VitaminA = 20.2 [4.2, 101.6] μg/100g; Zinc = 0.466 [0.301, 0.712] mg/100g (wet weight);