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Polymixiiformes (Beardfishes) >
Polymixiidae (Beardfishes)
Etymology: Polymixia: Greek, poly = a lot of + Greek, myxos = mucus (Ref. 45335); carmenae: Named for Carmen Lúcia Del Bianco Rossi-Wongtschowski, a Brazilian ichthyologist, emeritus professor of the Instituto Oceanográfico da Universidade de São Paulo, and former coordinator of the regional sub-committee Sul of the Program REVIZEE (Living Resources in the Brazilian Exclusive Economic Zone),.
Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien benthopelagisch; diepte 160 - 600 m (Ref. 130894). Tropical; 13°S - 34°S (Ref. 130894)
Southwestern Atlantic: Brazil and Uruguay.
Grootte / Gewicht / Leeftijd
Maturity: Lm ? range ? - ? cm
Max length : 20.9 cm SL mannelijk / geslacht onbekend; (Ref. 130894)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale stekels (totaal) : 5 - 6; Dorsale zachte stralen (totaal) : 26 - 28; Anale stekels: 4; Anale zachte stralen: 13 - 15; Wervels: 28. This species is distinguished by having the following characters: gill rakers on first gill arch 19-24; with main shaft of the first anal-fin proximal radial strongly arched; anterior process of the first anal-fin proximal radial elongated, about half length of the main shaft; pyloric caeca completely absent or numbering 46-71; spinoid scales with spines arranged in vertical rows; D 26-28 (rarely 22); postero-ventral edge of preopercle rounded; mature specimens with pigmentation of anal, dorsal and caudal fins inconspicuous, lacking a markedly darker margin (Ref. 130894).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Caixeta, H. de C., Oliveira, C. and M.R.S. de Melo, 2024. Another piece of the living fossil puzzle: A new species of Polymixia Lowe, 1836 (Polymixiiformes: Polymixiidae) from the western South Atlantic. Deep-Sea Research Part I: Oceanographic Research Papers 205:e104249:1-14. (Ref. 130894)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2024-1)
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij: van geen belang
Tools
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 4.0 ±0.4 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref.
120179): Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (15 of 100).
