''Leiocassis'' is a
genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
of
bagrid catfishes found mostly in
Southeast Asia
Southeast Asia is the geographical United Nations geoscheme for Asia#South-eastern Asia, southeastern region of Asia, consisting of the regions that are situated south of China, east of the Indian subcontinent, and northwest of the Mainland Au ...
with some species occurring in
China
China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...
.
The members of ''Leiocassis'' have an elongate narrow head and a prominently protruding snout.
Species
This genus has a confused taxonomy and there is uncertainty surrounding the number of valid
species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...
.
Certain
East Asia
East Asia is a geocultural region of Asia. It includes China, Japan, Mongolia, North Korea, South Korea, and Taiwan, plus two special administrative regions of China, Hong Kong and Macau. The economies of Economy of China, China, Economy of Ja ...
n bagrids formerly placed in this genus have been moved to ''
Pseudobagrus''.
In 2006,
Heok Hee Ng considered the genus ''Leiocassis'' to be restricted to
Sundaic Southeast Asia
Southeast Asia is the geographical United Nations geoscheme for Asia#South-eastern Asia, southeastern region of Asia, consisting of the regions that are situated south of China, east of the Indian subcontinent, and northwest of the Mainland Au ...
and
Borneo
Borneo () is the List of islands by area, third-largest island in the world, with an area of , and population of 23,053,723 (2020 national censuses). Situated at the geographic centre of Maritime Southeast Asia, it is one of the Greater Sunda ...
and only a handful of species as valid (''L. aculeatus'', ''L. collinus'', ''L. hosii'', ''L. micropogon'', ''L. poecilopterus'', and ''L. tenebricus'').
There are currently 14 recognized species in this genus:
* ''
Leiocassis aculeatus''
H. H. Ng & Hadiaty, 2005
* ''
Leiocassis bekantan''
H. H. Ng & H. H. Tan, 2018
* ''
Leiocassis brevirostris''
V. H. Nguyễn, 2005
* ''
Leiocassis collinus''
H. H. Ng & K. K. P. Lim, 2006
* ''
Leiocassis crassirostris''
Regan, 1913
* ''
Leiocassis doriae''
Regan, 1913
* ''
Leiocassis hosii''
Regan, 1906
* ''
Leiocassis longibarbus''
G. H. Cui, 1990
* ''
Leiocassis micropogon''
( Bleeker, 1852)
* ''
Leiocassis nitidus''
(Sauvage & Dabryi, 1874)
* ''
Leiocassis poecilopterus''
(Valenciennes
Valenciennes (, also , , ; ; or ; ) is a communes of France, commune in the Nord (French department), Nord Departments of France, department, Hauts-de-France, France.
It lies on the Scheldt () river. Although the city and region experienced ...
, 1840)
* ''
Leiocassis saravacensis''
Boulenger, 1894
* ''
Leiocassis tenebricus''
H. H. Ng & K. K. P. Lim, 2006
* ''
Leiocassis yeni''
V. H. Nguyễn & H. D. Nguyễn, 2005
References
Bagridae
Fish of Asia
Catfish genera
Freshwater fish genera
Taxa named by Pieter Bleeker
{{bagridae-stub