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Siluriformes (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes) > Tridentinae
Etymology: Tridens: Greek, tres tria = three + Latin, dens = teeth (Ref. 45335); chicomendesi: Name 'chicomendesi' after Chico Mendes, a worldwide known rubber worker from the type locality of the species.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten bottenlevande. Tropical
South America: Brazil.
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 2.1 cm SL hane/ej könsbestämd; (Ref. 137638)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Mjukstrålar i ryggfenan (totalt) : 15; Mjukstrålar i analfenan: 25 - 26. This species is distinguished by the following set of characters: 45-46 vertebrae; D 15, A 25-26; absence of a series of black spots along the anal-fin base; emarginate caudal fin; the anal and the urogenital openings situated at a vertical through the centrum of the 23rd or 24th vertebrae; the anal-fin origin at a vertical through the centrum of the 24th or 25th vertebrae; the mesehtmoid axis not completely over its cornu; a longer maxillary barbel, its tip reaching the first anterior 50% of the orbit length; more premaxillary teeth; lateral-line pores 3; a wider frontal, its anterior half approximately four times its posterior half width; ossified and maxilla; broad joint between quadrate and hyomandibula; longer posterodorsal process of hyomandibula, its length 20% of hyomandibula length; broad opercular patch of odontodes; interopercular odontodes 4; the upper hypural plate cartilage occupying about 50% of its area; absence of a proximal, distal and ventral cartilages on ventral hypohyal; absence of a lateral process on basibranchial 4; the presence of a cartilage block on the lateral process of autopalatine; the presence of a well developed ossification on proximal margin of ventral hypohyal; the presence of hypobranchial foramen; presence of an anterior joint between quadrate and base of posterodorsal process of hyomandibula (Ref. 137638).
Body shape (shape guide): elongated; Cross section: compressed.
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Henschel, E., W.M. Ohara and W.J.E.M. Costa, 2023. Two newminiature translucent catfish species of the rare genus Tridens (Siluriformes: Trichomycteridae) from the Madeira River basin, northern Brazil. J Fish Biol. 103:155-171. (Ref. 137638)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Fiskeri: saknar intresse
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 82804) |
PD50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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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). |
Trofisk nivå (Ref. 69278) |
3.0 ±0.3 se; based on size and trophs of closest relatives |
Sårbarhet i fisket (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |