Sewellia pudens

Sewellia pudens Kottelat, 2025

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Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Cypriniformes (Carps) > Gastromyzontidae (Hillstream loaches)
Etymology: pudens: Name 'pudens' from the Latin adjective meaning modest, humble, reserved, discreet, in reference to the absence of conspicuous pattern on the body and fins and the absence of ostentatious modification on pectoral- and pelvic-fin rays.
Eponymy: Lieutenant-Colonel Robert Beresford Seymour Sewell CIE. [...] (Ref. 128868), visit book page.

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

Freshwater; demersal. Tropical

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Asia: Laos.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 4.9 cm SL male/unsexed; (Ref. 137931)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 10; Anal soft rays: 6. This species is distinguished from its congeners by the following set of characters: poorly developed patterning of the body and fins; presence of black pigments in a vague midlateral stripe and 3-8 small saddles on the back, especially on caudal peduncle; presence of irregular markings on the body of some specimens, but not forming a clear pattern; absence of colour marks on most specimens, except for thin black lining along rays in the dorsal, anal and caudal fins, and, rarely, 1 or 2 faint blotches along lower edge of the caudal fin; absence of black patterning on pectoral and pelvic fins; conspicuous marking on body and paired fins (some large specimens may be almost completely dark brown) and the dorsal and caudal fins have several rows of conspicuous black dots; longitudinal groove on the snout between patches of large tubercles in males; absence of dorsal extensions or ridges along the dorsal side of the pectoral-fin rays; the pelvic fin not reaching the anal fin; and the anal fin not reaching the base of the caudal fin (Ref. 137931).
Body shape (shape guide): elongated; Cross section: oval.

Biology     Glossary (e.g. epibenthic)

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

Main reference Upload your references | References | Coordinator | Collaborators

Kottelat, M., 2025. Sewellia pudens, a new species of loach from Dakchung Plateau, southern Laos (Teleostei: Gastromyzontidae). Raffles Bulletin of Zoology 73:304-317. (Ref. 137931)

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

Not Evaluated 

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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AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, Search |