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Siluriformes (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes) > Trichomycterinae
Etymology: Scleronema: Greek, skleros = hard + Greek,nema = filament (Ref. 45335); milonga: The name ‘milonga’ refers to the musical rhythm popularized in Argentina and Rio Grande do Sul State (Brazil); noun in apposition.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten bottenlevande. Tropical
South America: Argentina and Brazil.
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 3.9 cm SL hane/ej könsbestämd; (Ref. 122319)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Mjukstrålar i ryggfenan (totalt) : 9 - 10; Mjukstrålar i analfenan: 6 - 7; Ryggkotor: 34 - 35. This species is distinguished from all its congeners, except ibirapuita and teiniagua by the absence of the pore s3 of the supraorbital line of the laterosensory system (vs. with pore s3) and it differs from these species by the presence of the pore s6 of the supraorbital line of the laterosensory system (vs. pore 6 absent); differs from S. mate and S. guapa by having the rounded brown blotches at the midlateral line larger than opercle (vs. blotches as large as or smaller than opercle and absent, respectivelu) (Ref. 122319).
Cross section: oval.
Occurs in rivers and streams with sand- and gravel-bottoms and has not been collected syntopically with its congeners. Individuals larger than 3.1 cm SL are reported to be capable of spawning and are considered adults. Reported diet composed mainly of immature, autochthonous and benthic insects (Ephemeroptera, Chironomidae, and Trichoptera), in both adults and juveniles (Ref. 122319).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Ferrer, J. and L.R. Malabarba, 2020. Systematic revision of the Neotropical catfish genus Scleronema (Siluriformes: Trichomycteridae), with descriptions of six new species from Pampa grasslands. Neotrop. Ichthyol. 18(2):1-81. (Ref. 122319)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Verktyg
Särskilda rapporter
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 82804) |
PD50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00759 (0.00332 - 0.01733), b=3.00 (2.81 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Trofisk nivå (Ref. 69278) |
3.1 ±0.4 se; based on size and trophs of closest relatives |
Sårbarhet i fisket (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |