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Perciformes/Notothenioidei (Icefishes) >
Nototheniidae (Cod icefishes) > Trematominae
Etymology: Trematomus: Greek, trematos = hole + Greek, tomo = section, cut (Ref. 45335); amphitreta: Name from Greek, genus translates as 'from the cold' and specific epithet as 'an orifice with two openings', describing the interorbital-pit morphology that distinguishes it from C. peninsulae.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina pelagic-oceanic. Polar
Antarctic Pacific: Antarctica, Ross Sea.
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 26.1 cm SL hane/ej könsbestämd; (Ref. 58577)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
This species is distinguished by having its pelvic fins reaching only about halfway from the pelvic-fin base to anal origin, and the second dorsal-fin insertion notably advanced with respect to the anal-fin origin; cephalic lateral-line pores large, the fourth supraorbital canal pores open into a median, well-defined, depressed interorbital pit, divided medially by a slightly raised ridge; width of depressed interorbital region greater than the length, does not extend anteriorly beyond the third supraorbital canal pore, and with a few uniserial cycloid scales immediately anterior to it; the lining of the mouth, gill cavities, and peritoneum black (Ref. 58577).
Body shape (shape guide): fusiform / normal; Cross section: compressed.
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Cziko, P.A. and C.-H.C. Cheng, 2006. A new species of nototheniid (Perciformes: Notothenioidei) fish from McMurdo Sound, Antarctica. Copeia 2006(4):752-759. (Ref. 58577)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 82804) |
PD50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00537 (0.00282 - 0.01024), b=3.24 (3.07 - 3.41), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Trofisk nivå (Ref. 69278) |
3.3 ±0.5 se; based on size and trophs of closest relatives |
Resiliens (Ref. 120179) |
Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (Preliminary K or Fecundity.). |
Sårbarhet i fisket (Ref. 59153) |
Moderate to high vulnerability (46 of 100). 🛈 |