Nemacheilus troglocataractus
Kottelat and Gery 1989
| ORDER | SUB-ORDER | FAMILY |
|---|---|---|
| Cypriniformes | Cobitoidei | Nemacheilidae |
Synonyms
None.
Country
ThailandTypes
Holotype: MHNG 2407.54 67.7mm SL. Paratypes: MHNG 2407.55 2 specimens 55.2mm and 57.3mm SL; NIFI 2184 47.8mm SL; KUMF 2958 58.3mm SL; MNHN 1989-266 3 specimens 48.2mm ‑ 55.7mm SL; ZSM 26794 2 specimens 58.2mm and 61.3mm SL; CMK 5960 2 specimens 51.8mm and 59.7mm SL; CMK 5961 55.3mm SL cleared and stained.
Distribution
Known only from the type locality: Tham Sai Yok Noi (also known as Tham Nam Tok and Tham Wang Ba Dan), 3km NNW of the village of Nam Tok, Sai Yok District, Kanchanaburi Province, Thailand (14o15'N, 99o4’E). The silurid Pterocryptis buccata has also been collected from this cave and the two species coexist. A troglophilic frog, Siamophryne troglodytes, is found in a cave in the same area (Suwannapoom et al. 2018).
Habitat
A typical gravel-bottomed streamway with shallow perennial flow (Trajano et al. 2002). A description of the cave is provided by Brouquisse (1987) and the hydrogeology is described by Brouquisse and Dalger (1987). The cave atmosphere contains 5% carbon dioxide.
Systematics
Possibly related to Nemacheilus mexicanus, N. masyae or N. pallidus (Kottelat 1990). In the subfamily Nemacheilinae.
Conservation Status
[CR B1ab(iii,v)+2ab(iii,v):3.1:2011]
(Vidthayanon, C. 2011. Nemacheilus troglocataractus. The IUCN Red List of Threatened Species 2011:http://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T14491A4438755.en. Downloaded on 04 July 2017). R (IUCN 1990), R (IUCN 1993), VU D2 (IUCN 1996, 2000).
This species has only been recorded from one subterranean stream in the Sai Yok Noi cave. Its extent of occurrence (50-100 km²) and area of occupancy (ca. 1 km²) are both very restricted, and there has been an observed decline in habitat quality and number of individuals. It is therefore assessed as Critically Endangered.
Museum Holdings
As above plus: ZSM/CMK 5992 3 specimens 49.4‑55.5mm SL (Kottelat 1990).
Key References
- Gery, J. (1987)
- Brouquisse, R. (1987)
- Brouquisse, F. and Dalger, D. (1987)
- Kottelat, M. and Gery, J. (1989)
- Kottelat, M. (1990)
- Ng, H.H. and Kottelat, M. (1998)
- Borowsky, R.L. and Vidthayanon, C. (2001)
- Deharveng, L. and Bedos, A. (2001)
- Trajano, E., Mugue, N., Krejca, J., Vidthayanon, C., Smart, D. and Borowsky, R. (2002)
- Kottelat, M. (2012)
- Duboue, E.R. and Borowsky, R. (2012)
- Brancelj, A., Boonyanusith, C., Watiroyram, S. and Sanoamuang, L. (2013)
- Suwannapoom, C., Sumontha, M., JTunprasert, J., Ruangsuwan, T., Pawangkhanant, P., Korost, D.V. and Poyarkov, N.A. (2018)
- Anonymous (2018)
- Ellis, M. (2018)
- Ellis, M. (2020)
| Gery, J. | Journal Article | 1987 | Note sur la faune pisciaire souterraine des Celebes et de Thailande |
| Brouquisse, R. | Journal Article | 1987 | Resultats speleologiques Thailande |
| Brouquisse, F. and Dalger, D. | Journal Article | 1987 | Hydrogeochimie |
| Kottelat, M. and Gery, J. | Journal Article | 1989 | Nemacheilus troglocataractus, a new blind cavefish from Thailand (Osteichthyes, Balitoridae) |
| Kottelat, M. | Book | 1990 | Indochinese nemacheilines. A revision of nemacheiline loaches Pisces, Cypriniformes) of Thailand, Burma, Laos, Cambodia and southern Vietnam |
| Ng, H.H. and Kottelat, M. | Journal Article | 1998 | Pterocryptis buccata, a new species of catfish from Western Thailand (Teleostei: Siluridae) with epigean and hypogean populations |
| Borowsky, R.L. and Vidthayanon, C. | Journal Article | 2001 | Nucleotide diversity in populations of balitorid cave fishes from Thailand |
| Deharveng, L. and Bedos, A. | Book Section | 2001 | Thailande |
| Trajano, E., Mugue, N., Krejca, J., Vidthayanon, C., Smart, D. and Borowsky, R. | Journal Article | 2002 | Habitat, distribution, ecology and behaviour of cave balitorids from Thailand (Teleostei: Cypriniformes) |
| Kottelat, M. | Journal Article | 2012 | Conspectus cobitidum: An inventory of the loaches of the world (Teleostei: Cypriniformes: Cobitoidei) |
| Duboue, E.R. and Borowsky, R. | Journal Article | 2012 | Altered rest-activity patterns evolve via circadian independent mechanisms in cave adapted balitorid loaches |
| Brancelj, A., Boonyanusith, C., Watiroyram, S. and Sanoamuang, L. | Journal Article | 2013 | The groundwater-dwelling fauna of Southeast Asia |
| Suwannapoom, C., Sumontha, M., JTunprasert, J., Ruangsuwan, T., Pawangkhanant, P., Korost, D.V. and Poyarkov, N.A. | Journal Article | 2018 | A striking new genus and species of cave-dwelling frog (Amphibia: Anura: Microhylidae: Asterophryinae) from Thailand |
| Anonymous | Journal Article | 2018 | Scientists found a new genus and species of frogs |
| Ellis, M. | Journal Article | 2018 | The recorded fauna of the limestone caves of Thailand to April 2018 |
| Ellis, M. | Journal Article | 2020 | The caves of western and central Thailand |