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Teleostei (teleosts) > Cypriniformes (Carps) > Nemacheilidae (Brook loaches)
Etymology: Nemacheilus: Greek, nema, -atos = filament + Greek, cheilos = lip (Ref. 45335).
More on authors: Kottelat & Géry.

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

Freshwater; benthopelagic. Tropical; 20°N - 4°N

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

Asia: Tham Sai Yok Noi, Thailand.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 6.8 cm SL male/unsexed; (Ref. 37842)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 11 - 12; Anal soft rays: 8. Absence of eyes and pigmentation; presence of a nuchal cavity; slightly compressed body, tapering posteriorly; head depressed, conical when seen from above (Ref. 37842).

Cave-restricted species. Inhabits headwater stream with a relatively low volume of water flowing over rocks, alternating with small pools and gravel-bottomed shallow reaches (Ref. 42927). Few individuals were seen adhering to rocks in fast-flowing, well-aerated water or swimming in the pools (Ref. 42927). Exhibits agonistic behavior upon encounter (Ref. 42927). Feeds on benthic microorganisms (Ref. 58784).

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

Main reference Upload your references | References | Coordinator | Collaborators

Proudlove, G.S., 1997. A synopsis of the hypogean fishes of the world. p. 351-354. In Proceedings of the 12th International Congress of Speleology, La Chaux de Fonds, Switzerland. vol. 3. (Ref. 27297)

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

Critically Endangered (CR) (B1ab(iii,v)+2ab(iii,v)); Date assessed: 22 February 2011

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: commercial; aquarium: commercial

FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items
Diet composition
Food consumption
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Predators

Ecology
Ecology

Population dynamics
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Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
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Abundance

Life cycle
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Anatomy
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Physiology
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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): 2.7 ±0.3 se; based on size and trophs of closest relatives

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).

Price category (Ref. 80766): Unknown.

Nemacheilus troglocataractus Kottelat & Géry, 1989