Metzia bounthobi

Metzia bounthobi Shibukawa, Phousavanh, Phongsa & Iwata, 2012

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Teleostei (teleosts) > Cypriniformes (Carps) > Xenocyprididae (East Asian minnows)
Etymology: bounthobi: Named for Bounthob Praxaysombath (NUOL), who was the leading researcher performing the field surveys throughout the NUOL-NEF project on 2007-2010. Eight of all 10 type series of the new species were brought from the project surveys.
Eponymy: Dr Charles William Metz (1889–1975) was an American zoologist, geneticist and taxonomist whose doctorate was awarded by Stanford University. He co-wrote: A catalog of the fishes known from the waters of Korea (1913). Dr Bounthob Praxaysombath is a zoologist, entomologist and arachnologist at the National University of Laos, Vientiane, where he is Professor and Head of the Deapartment of Biology, Faculty of Science. [...] (Ref. 128868), visit book page.

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

Freshwater; benthopelagic. Tropical

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Asia: Ou River basin (a tributary of the Mekong) in Phongsaly and Luang Prabang provinces of Laos.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 6.1 cm SL male/unsexed; (Ref. 93140)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 10; Anal soft rays: 21 - 23. Differs from all other species of Metzia in having the following characters: anal fin with 18-20 branched rays; scales on lateral line 49-55; predorsal scale rows 33-36; circumpeduncular scale rows 20-22; gill rakers on outer surface of first gill arch 8-10. Resembles species of Hemiculterella, Ischikauia and at least a part of Anabarilius in sharing a sharp keel restricted in development to the area between pelvic-fin base and anus, last unbranched dorsal-fin ray being soft, and an air bladder composed of two chambers. However, this species differs in having the following characters; a notably rounded snout (vs. pointed in Hemiculterella, Ischikauia and Anabarilius); 18-20 branched anal-fin rays (vs. 8-17 in Hemiculterella, Ischiakua and Anabarilius ); 49-55 lateral-line scales (vs. more than 58 in Ischikauia and Anabarilius, except for A. transmontana with 54-57); air bladder with rounded posterior end (vs. posterior end with a small lobe at least in Hemiculterella); and 39-40 vertebrae (vs. 40-43, 42-43 and 43-48 in Hemiculterella, Ischikauia and Anabarilius, respectively). Also similar to its sympatric species Paralaubuca barroni but can be readily distinguished by having 18-20 anal-fin rays (vs. 24-29 ) and 8-10 gill rakers (vs. 19-24) and a distinct keel between anus and a vertical through posterior end of pelvic-fin base, keel preceded by a very weak midventral, blunt ridge extending anteriorly to a vertical through posterior half of pectoral fin (vs. a distinct, complete abdominal keel extending from anus to isthmus) (Ref. 93140).
Body shape (shape guide): elongated.

Biology     Glossary (e.g. epibenthic)

Occurs in upland clear streams with moderate or slow current (Ref. 93140).

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

Main reference Upload your references | References | Coordinator | Collaborators

Shibukawa, K., P. Phousavanh, K. Phongsa and A. Iwata, 2012. A new species of Metzia (Cypriniformes: Cyprinidae) from Northern Laos. Zootaxa 3586:264-271. (Ref. 93140)

IUCN Red List Status (Ref. 130435: Version 2025-2)

Not Evaluated 

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





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FAO - Publication: search | FishSource |

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