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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).
Environment: milieu / climate zone / depth range / distribution range
Ecologie
; zoet water demersaal. Tropical
Africa: St. John River drainage in Guinea and Liberia (Ref. 116018).
Grootte / Gewicht / Leeftijd
Maturity: Lm ?  range ? - ? cm
Max length : 5.6 cm SL mannelijk / geslacht onbekend; (Ref. 116018)
Korte beschrijving
Morfologie | Morfometrie
Dorsale stekels (totaal): 2; Dorsale zachte stralen (totaal): 4-6; Anale stekels 0; Anale zachte stralen: 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).
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).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
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 op de Rode Lijst van het IUCN (Ref. 130435)
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij:
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref.
120179): Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).