Chionodraco hamatus is a species of marine ray-finned fish belonging to the family Channichthyidae, the crocodile icefishes. It is found in the Southern Ocean.
Chionodraco hamatus was first formally described in 1905 as Chaenichthys rhinoceratus hamatus by the Swedish zoologist Einar Lönnberg with the type locality given as Snow Hill Island in Graham Land on the Antarctic Peninsula.[3] Lönnberg subsequent classified it in a new genus Chionodraco as its only species so C. hamatus is the type species of that genus by monotypy.[4] Some authorities regard C. kathleenae as a valid species.[3] The specific name hamatus means “hooked”, a reference to the hooked operculum spines.[5]
Chionodraco hamatus has a robust, backwards pointing spine on its snout. In larger individuals the ridges above the eyes are roughly textured. The dorsal fin has 5 to 7 spines and 38 to 42 soft rays while the anal fin has 33 to 38 soft rays. The overall colour is greyish on the upper body and whitish on the belly with 2 diagonal stripes on the cheek. Mature males have dark fins.[6] This species attains a maximum total length of 49 cm (19 in).[2]
Chionodraco hamatus is found in the cold waters of the continental shelf in Antarctica. This species lives in the demersal zone, and can be found at a depth range of 4 to 600 metres.[2]
Chionodraco hamatus feeds most on small fish, krill, and fish larvae. [7]
Spawning appears to occur during the summer and females have a fecundity of 2,900 to 4,200 oocytes.[6] In common with many other channichthyid fishes, reproduction in Chionodraco hamatus involves laying eggs in a nest and parental guarding. Male prepares a nest and courts the female. Egg deposition (and presumably fertilization too) takes place at night. Female remains in the nest, guarding and fanning the eggs. Hatching takes place over a prolonged period of time. Male seems not to be involved in the care of the eggs.[8] The larvae have a long pelagic phase.[2]
Chionodraco hamatus is a species of marine ray-finned fish belonging to the family Channichthyidae, the crocodile icefishes. It is found in the Southern Ocean.
Chionodraco hamatus Chionodraco generoko animalia da. Arrainen barruko Channichthyidae familian sailkatzen da.
Chionodraco hamatus Chionodraco generoko animalia da. Arrainen barruko Channichthyidae familian sailkatzen da.
Chionodraco hamatus è un pesce appartenente alla famiglia Channichthyidae.
Le dimensioni sono solitamente comprese tra i 33 ed i 37 cm, ma si ha notizia di alcuni esemplari lunghi anche 49 cm.[2]
Chionodraco hamatus abita le fredde acque della piattaforma continentale in Antartide.[2] È un pesce demersale, e può essere rinvenuto a profondità comprese tra i 4 ed i 600 metri.[3]
C. hamatus si nutre principalmente di krill, larve di pesce e pesci di piccole dimensioni.[4]
Come molte specie appartenenti alla famiglia Channichthyidae, la riproduzione comprende la deposizione in un nido delle uova, le quali vengono poi sorvegliate da uno dei genitori. Il maschio prepara un nido, per poi corteggiare la femmina e la deposizione delle uova (e presumibilmente anche la loro fecondazione) ha luogo di notte. La femmina rimane nei pressi del nido, dove sorveglia le uova e se ne prende cura. La cova dura per un periodo di tempo prolungato, durante il quale il maschio non sembra coinvolto nella cura delle uova.[5] Le larve hanno una prolungata fase pelagica.[3]
Chionodraco hamatus è un pesce appartenente alla famiglia Channichthyidae.
Chionodraco hamatus is een straalvinnige vissensoort uit de familie van krokodilijsvissen (Channichthyidae).[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1905 door Lönnberg.
Bronnen, noten en/of referenties
O Chionodraco hamatus é uma espécie animal capaz de sobreviver a temperaturas que congelariam a maior parte dos peixes.
Chionodraco hamatus (Lönnberg, 1905)
Шиповатая белокровка[1](лат. Chionodraco hamatus) — вид лучепёрых рыб из семейства белокровных рыб. Обитает на антарктическом шельфе, предпочитая глубины от 4 до 400 м.
Максимально зарегистрированная длина тела — 49 см, обычно 33—37 см[2].
Питается мелкими рыбами, мальками и крилем. Сама становится добычей крупных рыб, например, антарктического клыкача.
Гнездо готовит самец. Помещение икры в гнездо происходит в ночное время. На гнезде остаётся самка, самец, вероятно, не включён в заботу об икре[3].
Шиповатая белокровка(лат. Chionodraco hamatus) — вид лучепёрых рыб из семейства белокровных рыб. Обитает на антарктическом шельфе, предпочитая глубины от 4 до 400 м.
獨角雪冰魚，為輻鰭魚綱鱸形目南極魚亞目鱷冰魚科的其中一種，分布於南冰洋海域，棲息深度4-600公尺，體長可達49公分，生活在大陸棚，為底棲性魚類，屬肉食性，生活習性不明。
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