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Atheriniformes (Silversides) >
Atherinopsidae (Neotropical silversides) > Atherinopsinae
Etymology: Odontesthes: Greek, odous = teeth + Greek,esthes = suit, something used to wrap (Ref. 45335); bicudo: From Portugues word meaning pointed, with a beak, and alludes to the snout shape of this species.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten pelagiska. Subtropical
South America: group of partially isolated freshwater lakes northeast of the city of Osorio, Rio Grande do Sul, Brazil.
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 22.2 cm SL hane/ej könsbestämd; (Ref. 116661)
Taggstrålar i ryggfenan (totalt) : 4 - 7; Mjukstrålar i ryggfenan (totalt) : 8 - 10; Taggstrålar i analfenan: 1; Mjukstrålar i analfenan: 15 - 18; Ryggkotor: 47 - 49. Scales in lateral line series above lateral band 48-52; predorsal scales 23-26. Specimens over 10.0 cm SL are recognized by the elongate head, small eyes, narrow interorbital, long snout and thick pointed premaxilla. Easily distinguished from O. piquava and O. mirinensis by several head shape characters. Ventral head profile nearly straight, sometimes with a slight convexity at the retroarticular joint; eyes clearly smaller than snout length; reticulate pigmented pattern in the border of check scales and body scales above and below lateral band (Ref. 47314).
Body shape (shape guide): elongated.
Occurs in exclusively freshwater lakes of the coastal laguna system (Ref. 47314).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Wingert, J.M., J. Ferrer and L.R. Malabarba, 2017. Review of the Odontesthes perugiae species group from Río de La Plata drainage, with the description of a new species (Atherinomorpha: Atherinopsidae). Zootaxa 4250(6):501-528. (Ref. 116661)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
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Harmless
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00550 (0.00238 - 0.01266), b=3.06 (2.87 - 3.25), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Trofisk nivå (Ref. 69278) |
3.6 ±0.3 se; based on size and trophs of closest relatives |
Resiliens (Ref. 120179) |
Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.). |
Sårbarhet i fisket (Ref. 59153) |
Low to moderate vulnerability (26 of 100). 🛈 |