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Teleostei (teleosts) > Cypriniformes (Carps) > Nemacheilidae (Brook loaches)
Etymology: Yunnanilus: From Yunnan, city on southwest China.
More on author: Regan.

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

Freshwater; demersal. Subtropical; 25°N - 24°N

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Asia: known only from Dianchi Lake, Yunnan, China.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 7.7 cm SL male/unsexed; (Ref. 12040)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 11 - 12; Anal soft rays: 8. Distinguished from all other species of the genus by its terminal mouth with an upwardly directed gape; absence of lateral line and head pores; scaled predorsal area; 8 1/2 branched dorsal rays; 14 branched caudal rays (Ref. 12040).

Adults inhabit shallow waters of lake (less than 1 m deep) among vegetation, but not in inlets or outlets of the lake. Feed on shrimps (Ref. 12040).

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

Main reference Upload your references | References | Coordinator | Collaborators

Kottelat, M. and X.L. Chu, 1988. Revision of Yunnanilus with description of a miniature species flock and six new species from China (Cypriniformes: Homalopteridae). Environ. Biol. Fishes 23(1-2):65-93. (Ref. 12040)

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

Endangered (EN) (B1ab(iii)); Date assessed: 01 November 2022

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items
Diet composition
Food consumption
Food rations
Predators

Ecology
Ecology

Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance

Life cycle
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics

Distribution
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Anatomy
Gill area
Brain
Otolith

Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)

Genetics
Genetics
Heterozygosity
Heritability

Human related
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Stamps, coins, misc.

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Taxonomy
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References
References

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Internet sources

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): 3.6 ±0.59 se; based on food items.

Resilience (Ref. 120179): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).

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

Yunnanilus nigromaculatus (Regan, 1904)