PlanetCatfish.com

Silurus wrote: ↑05 Dec 2020, 11:04The dwarf goonch is finally getting a name.

Abstract

Bagarius vegrandis

, new species, is described from the Chao Phraya and Mekong river drainages. It differs from congeners in having a small maximum body size (to 220 mm SL vs. 520–1400 mm SL) and the adipose-fin origin markedly posterior to (vs. at vertical through or very slightly posterior to) the anal-fin origin. It further differs from congeners in having the following unique combination of characters: ovoid unculiferous plaques on dorsal surface of head, lateral margin of frontal not significantly deflected dorsally, eye diameter 11–15% HL, interorbital distance 23–28% HL, head width 18.3–22.3% SL, head depth 11.1–14.1% SL, filamentous extensions to first pectoral-fin element reaching to anus, dorsal spine width 10.6–13.9 times in its length, body depth at anus 8.7–12.0% SL, neural spines of the 4–6 vertebrae immediately anterior to adipose fin distally flattened but not forming series of prominent bumps along dorsal midline, length of adipose-fin base 10.8–13.0% SL, caudal-peduncle length 19.0–22.4% SL, caudal-peduncle depth 3.2–4.2% SL, 19–20 preanal vertebrae, and 39–40 total vertebrae. Bagarius bagarius (Hamilton, 1822) is demonstrated to be a species restricted to the Indian subcontinent (with Bagrus yarrelli Sykes, 1839, Pimelodus platespogon Valenciennes, in Jacquemont, 1839 and Pimelodus carnaticus Jerdon, 1849 as junior subjective synonyms) and Bagarius lica Volz, 1903 resurrected from synonymy with B. yarrelli as a valid species from Southeast Asia.

• Keywords: Pisces, taxonomy, morphology, species delimitation, Southeast Asia

Shovelnose wrote: ↑04 Feb 2021, 03:03 Is a copy possible Eric?

AlexGano wrote: ↑06 Feb 2021, 07:56 So,it means the small Bagarius that recognized as B.bagarius before in China and south-east Asian is now B.lica, and the name B.bagarius belongs to big goonch now?
I'm astonished now. Hope they can have more researches on B.rutilus in the future.

Bagarius

Jools wrote: ↑06 Feb 2021, 09:22

AlexGano wrote: ↑06 Feb 2021, 07:56 So,it means the small Bagarius that recognized as B.bagarius before in China and south-east Asian is now B.lica, and the name B.bagarius belongs to big goonch now?
I'm astonished now. Hope they can have more researches on B.rutilus in the future.

No, it doesn't mean that, if I understand what you're suggesting. The "small" Indochinese Bagarius is B. vegrandis. B. lica includes the Sundaic Southeast Asian populations. The most westerly or Indian species is B. bagarius of which B. yarrelli is a junior synonym (maybe this is what you call "big goonch"?).

The

Bagarius

genus page has been updated to reflect the recent work but this is all pretty new, so we may well have missed something.

Hope that helps,

Jools