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Scombriformes (Mackerels) >
Tetragonuridae (Squaretails)
Etymology: Tetragonurus: Greek, tetra = four + Greek, gonia = angle + Greek, oura = tail (Ref. 45335).
More on author: Lowe.
Environment: milieu / climate zone / depth range / distribution range
Οικολογία
Θαλασσινό(ά); ωκεανόδρομο(ς) (Ref. 51243); εύρος βάθους 0 - 800 m (Ref. 10823), usually 0 - 91 m (Ref. 7251). Subtropical; 47°N - 8°N
Atlantic, Indian and Pacific: in tropical and subtropical waters. Western Atlantic: Nova Scotia in Canada to Panama (Ref. 7251).
Μέγεθος / Βάρος / Age
Maturity: Lm ?  range ? - ? cm
Max length : 50.0 cm TL αρσενικό/απροσδιόριστο; (Ref. 4415)
Ραχιαίες άκανθες (συνολικά) : 14 - 17; Μαλακές ραχιαίες ακτίνες (συνολικά) : 10 - 13; Εδρικές άκανθες: 1; Μαλακές εδρικές ακτίνες: 9 - 12; Σπόνδυλοι: 44 - 51. Light brown to nearly black in color.
Oceanic, mostly in the upper 91 m but adults probably deeper (Ref. 7251). Occasionally strays close to shore (Ref. 7251). Young commonly inquiline in pelagic tunicates, especially Salpa and Pyrosoma (Ref. 11149). Feeds on soft-bodied medusae, ctenophores and especially salps; will also take plankton (Ref. 11149). The flesh may be poisonous (Ref. 27121).
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες
Haedrich, R.L., 1986. Tetragonuridae. p. 851. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 4415)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Poisonous to eat (Ref. 27121)
Human uses
αλιεία: χωρίς ενδιαφέρον
Εργαλεία
Special reports
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Διαδικτυακές πηγές
Estimates based on models
Preferred temperature (Ref.
123201): 13.9 - 28.5, mean 24.8 °C (based on 1976 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Τροφικό Επίπεδο (Ref.
69278): 3.6 ±0.37 se; based on food items.
Ελαστικότητα (Ref.
120179): Χαμηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού 4,5 - 14 έτη (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (40 of 100).