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Cypriniformes (Carps) >
Nemacheilidae (Brook loaches)
Etymology: Lefua: A Niuean word that means "kingship", "royalty"; nishimurai: Name 'nishimurai' dedicated to Toshiaki Nishimura, who first morphologically distinguished this novel species.
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
; zoet water demersaal. Temperate
Asia: Japan.
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ?  range ? - ? cm
Max length : 6.3 cm SL mannelijk / geslacht onbekend; (Ref. 133057)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale zachte stralen (totaal) : 8 - 10; Anale zachte stralen: 8 - 10; Wervels: 39 - 43. This species is distinguished from its congeners by the following set of characters: rhomboid or triangular dark blotches on middle of caudal fin base absent; black longitudinal stripe on both body sides in mature males absent; dusky cross bars on dorsal area of body absent; dusky bar beside dorsal fin base absent; eyes located dorsally on head; narrow conspicuous longitudinal mark between base of outer rostral barbel and eye; small dorsal fin; small or bit diameter (6.3-11.2% of head length); small value of interorbital width relative to body width (28.1-39.4%); dark spots dorsally and ventrally on caudal fin base; small dark brown spots from snout to caudal peduncle; small dark spots on dorsal and caudal fins (approximately same size as eyes) (Ref. 133057).
Cross section: oval.
This species dwells in small mountain streams with soft bottom composed of sand and gravel. It hides under rocks and stones at the river edge or sediments, as well as under fallen leaves from the trees around the water body (Ref. 133057).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Katayama, Y. and N. Sawada, 2024. Integrative taxonomy revealed a new species of Lefua (Teleostei, Nemacheilidae) from Fukui Prefecture, Japan. Evol. Syst. 8:247-260. (Ref. 133057)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij: van geen belang
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Schattingen op basis van modellen
Fylogenetische diversiteitsindex (Ref. 82804) |
PD50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00724 (0.00347 - 0.01512), b=3.01 (2.84 - 3.18), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Trofisch niveau (Ref. 69278) |
2.8 ±0.3 se; based on size and trophs of closest relatives |
Weerstandsvermogen (Ref. 120179) |
Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (Preliminary K or Fecundity.). |
Kwetsbaarheid van de visserij (Ref. 59153) |
Low to moderate vulnerability (33 of 100). 🛈 |