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Teleostei (teleosts) > Cypriniformes (Carps) > Nemacheilidae (Brook loaches)
Etymology: Yunnanilus: From Yunnan, city on southwest China; niulanensis: The specific name alludes to the type locality, the Niulanjiang River.
More on authors: Chen, Yang & Yang.

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

Freshwater; demersal. Tropical

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Asia: Yanglinhe River, a tributary of the Niulanjiang River in Yunnan, China.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 5.5 cm SL male/unsexed; (Ref. 89956)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 12; Anal soft rays: 8. Distinguished from other species of Yunnanilus by the following combination of characters: dorsal-fin rays iii, 9; anal-fin rays iii, 5; pectoral-fin rays i, 11; pelvic-fin rays i, 7-8; branched caudal-fin rays 14; mouth subterminal; 9-11 gill rakers in the inner side of the first gill arch, outer row of gill rakers absent; upper two-thirds of body and head covered by large brown spots; fins hyaline; body covered with scales; no lateral line; no cephalic sensory pores; caudal peduncle length less than caudal peduncle depth; caudal peduncle length 9.2-11.1% SL; body depth 21.0-25.8 % SL; eye diameter 5.4-6.0 % SL; interorbital width 9.9-12.1 % SL (Ref. 89956).

Occurs in Yanglinhe River , China with altitude of 1909 m and with slow flowing and clear water. The stream of the type locality has sandy or a little muddy substrate (Ref. 89956).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

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Chen, Z., J. Yang and J. Yang, 2012. Description of a new species of the genus Yunnanilus Nichols, 1925 (Teleostei: Nemacheilidae) from Yunnan, China. Zootaxa 3269:57-64. (Ref. 89956)

IUCN Red List Status (Ref. 130435: Version 2024-2)

Vulnerable (VU) (B1ab(iii)); Date assessed: 17 January 2024

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: of no interest

FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00724 (0.00347 - 0.01512), b=3.01 (2.83 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.1 ±0.3 se; based on size and trophs of closest relatives

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

Yunnanilus niulanensis Chen, Yang & Yang, 2012