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Siluriformes (Catfishes) >
Mochokidae (Squeakers or upside-down catfishes) > Chiloglanidinae
Etymology: Chiloglanis: Greek, cheilos = lip + Greek, glanis = a fish that can eat the bait without touching the hook; a cat fish (Ref. 45335); tweddlei: This species is named for Denis Tweddle, of the South African Institute for Aquatic Biodiversity (SAIAB), who collected most of the type material and provided the specimens; and he is recognized for his ongoing contributions to ichthyological research in Africa (Ref. 116018).
Eponymy: Denis (d: 1949) and Sharon Tweddle are husband and wife and together were honoured in the name of the dwarf sanjika for their contributions (e. [...] (Ref. 128868), visit book page.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten bentopelagisk. Tropical
Africa: St. John River drainage in Guinea and Liberia (Ref. 116018).
Storlek / Vikt / Ålder
Könsmognad: Lm ? range ? - ? cm
Max length : 5.6 cm SL hane/ej könsbestämd; (Ref. 116018)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt) : 2; Mjukstrålar i ryggfenan (totalt) : 4 - 6; Taggstrålar i analfenan: 0; Mjukstrålar i analfenan: 9 - 10. Diagnosis: Chiloglanis tweddlei is distinguished from C. waterloti, C. normani, C. occidentalis, C. nzerekore, C. longibarbis, C. kabaensis, and C. kolente in having more mandibular teeth in the functional row; it can be easily distinguished from C. polyodon and C. lamottei in having fewer mandibular teeth in the functional row, and from Chiloglanis aff. micropogon in having moderately long medial and lateral mandibular barbels vs. absent or reduced barbels; it is distinguished from C. dialloi, C. loffabrevum, and C. camarabounyi in having longer dorsal and pectoral spines; it can be distinguished from C. pezoldi in having a wider premaxillary tooth patch, 15.3-18.2% of standard length vs. 12.2-15.8%, and in having more premaxillary teeth in four rows vs. fewer teeth in three rows (Ref. 116018).
Body shape (shape guide): elongated.
This species was collected in a medium-sized stream (3-12m) with mostly sand and bedrock ridges, as well as, fallen trees and undercut tree roots (Ref. 116018).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Schmidt, R.C., H.L. Bart, F. Pezold and J.P. Friel, 2017. A biodiversity hotspot heats up: Nine new species of suckermouth catfishes (Mochokidae: Chiloglanis) from Upper Guinean forest steams in West Africa. Copeia 105(2):301-338. (Ref. 116018)
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): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: 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): 3.2 ±0.4 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 vulnerability (10 of 100).
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