Description:Liobagrus styani is redescribed
and its identity clarified. The real L. styani
is represented by the population found in the Po-He,
a tributary of the lake Huanggai system in the middle
Chang-Jiang basin, at Chibi City, South Hubei Province,
China. The materials currently identified as L.
styani from Henan, Shaanxi, Anhui and Jiangxi
provinces possibly represent an undescribed species.
Taxonomic and nomenclatural comments are provided
for Chinese species of Liobagrus with a smooth
posterior edge of the pectoral-fin spine. Etymology:
In honour of Frederic William Styan (1838– 1934),
tea trader and natural history collector in China,
who “presented” holotype. Remarks:
This species is known only from the upper Po He region
flowing into Huanggai Hu, on the border of Hubei and
Hunan Provinces, China. Previously common and more
widespread in Po He, it now has a restricted population
with an extent of occurrence (EOO) of at most 50 km2.
Numerous weirs and other small water facilities have
been constructed around the lake leading to a continuing
decline in habitat extent and quality. As a clear-water
species it is sensitive to pollution from sedimentation
and nutrient loads, and there is a continuing decline
in the population size resulting from pollution from
various sources. There is a single location based
on these threats. Therefore, it is assessed as Critically
Endangered (IUCN 2022).
Common
Name:
None
Synonyms:
None
Family:
Amblycipitidae
Distribution:
East
Asia:
Middle and lower Changjiang [= Yangtze River]. Type
locality: Known only from the headwaters
of the Po-He, a tributary flowing into Huanggai Lake
in the middle Chang-Jiang basin, at Chibi City, South
Hubei Province, China.
If you would like to contribute to the monthly
factsheets with an article, information or photos, please e-mail
me. You will of course be credited for your work.
If you would like to donate any denomination
of monies to the site just click the above link button. All proceeds
will go to running the site and hopefully to keep it going for a few
years yet.