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> Cypriniformes (Carps) > Nemacheilidae (Brook loaches)
Etymology: Lefua: A Niuean word that means "kingship", "royalty".

Environment: milieu / climate zone / depth range / distribution range Ökologie

; süßwasser demersal. Subtropical

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Asia: Japan.

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 5.7 cm SL Männchen/unbestimmt; (Ref. 128930)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt) : 4; Rückenflossenweichstrahlen (insgesamt) : 6; Afterflossenstacheln: 4; Afterflossenweichstrahlen: 5; Wirbelzahl: 36 - 40. This species is distinguished from its congeners by the following characters: with a narrow conspicuous dark brown band between the base of outer rostral barbel and eye (vs. absence, or light and/or indistinct if present) and eyes located dorsally on the head (vs. dorsolaterally); differs from L. costata, L. pleskei, L. nikkonis, and L. sayu by absence of a rhomboid or triangular dark blotch on the middle of the caudal-fin base (vs. presence); differs from L. echigonia by absence of dark spots on the dorsal and caudal fins, or sparse if present (vs. presence) (Ref. 128930).

Occurs at the uppermost reaches of mountain streams surrounded by dense natural vegetation; preferring sandy bottoms with gravel or pebbles, where it hides under rocks and stones. It is syntopically distributed together with L. echigonia in the Yura and Kako rivers, although L. echigonia has a tendency to inhabit more lentic waters in swampy streams and ditches (Ref. 128930).

Life cycle and mating behavior Maturities | Fortpflanzung | Spawnings | Egg(s) | Fecundities | Larven

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Hosoya, K., T. Ito and J.I. Miyazaki, 2018. Lefua torrentis, a new species of loach from western Japan (Teleostei: Nemacheilidae). Ichthyol. Exlor. Freshwat. 28(3):193-201. (Ref. 128930)

IUCN Rote Liste Status (Ref. 130435)

Nicht untersucht

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00708 (0.00336 - 0.01491), b=3.01 (2.84 - 3.18), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 2.8 ±0.3 se; based on size and trophs of closest relatives

Widerstandsfähigkeit (Ref. 120179): mittel, Verdopplung der Population dauert 1,4 - 4,4 Jahre. (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

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Lefua torrentis Hosoya, Ito & Miyazaki, 2018