> Aulopiformes (Grinners) > Anotopteridae (Daggertooth)
Etymology: Anotopterus:Greek, a = without + Greek, noton = back + Greek, pteron = fin (Ref. 45335). More on author: Regan.
Environment: milieu / climate zone / depth range / distribution range
Οικολογία
Southern Ocean: circumglobal (Ref. 31260). Collected from Meteor and Maud rises, in the Lazarev Sea, and near the South Sandwich Islands (Ref. 36355).
Μέγεθος / Βάρος / Age
Maturity: Lm? range ? - ? cm Max length : 105 cm SL αρσενικό/απροσδιόριστο; (Ref. 31260); common length : 90.0 cm NG αρσενικό/απροσδιόριστο; (Ref. 5755)
Short description Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία
Ραχιαίες άκανθες (συνολικά) : 0; Μαλακές ραχιαίες ακτίνες (συνολικά) : 0; Μαλακές εδρικές ακτίνες: 13 - 16; Σπόνδυλοι: 81 - 85. In adults, head depth 21.3-23.2% of lower jaw length; postorbital region 5.0-6.7% SL or 25.5-30% HL (1/3 of HL). Rear edge of gill cover overlaps with the vertical of the middle of the 4th vertebrae. Pectoral fins begin at the vertical of the end of the 4th to beginning of 5th vertebrae. Postadipose distance represents 4.6-5.9% SL (Ref. 31260).
Inhabits the epimesopelagic layer of the southern ocean circumglobally. Only fry and juveniles were observed in subtropical waters; large adults encountered in sub-Antarctic and Antarctic waters. Capable of shedding teeth and reducing gastrointestinal tract prior to spawning. Monocyclic, that is, they die after the first spawning (a reproductive strategy that evolved as a result of the large distance between feeding and spawning areas). Main food is
Notolepis coatsi which are 15-38 cm in length and weighs to 57-90 g (Ref. 31260).
Life cycle and mating behavior Maturities | Αναπαραγωγή | Spawnings | Egg(s) | Fecundities | Προνύμφες
Kukuev, E.I., 1998. Systematics and distribution in the world ocean of daggertooth fishes of the genus Anotopterus (Anotopteridae, Aulopiformes). J. Ichthyol. 38(9):716-729. (Ref. 31260)
