Leiocassis

Leiocassis is a genus of bagrid catfishes found mostly in Southeast Asia with some species occurring in China.

Leiocassis
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Siluriformes
Family:	Bagridae
Genus:	Leiocassis Bleeker, 1857
Type species
Bagrus micropogon Bleeker, 1852
Synonyms
Liocassis Günther, 1864 (lapsus) Liocassus Herre, 1934 (lapsus)

The members of Leiocassis have an elongate narrow head and a prominently protruding snout.^[1]

Species

This genus has a confused taxonomy and there is uncertainty surrounding the number of valid species.^[1] Certain East Asian bagrids formerly placed in this genus have been moved to Tachysurus. In 2006, Heok Hee Ng considered the genus Leiocassis to be restricted to Sundaic Southeast Asia and Borneo and only a handful of species as valid (L. aculeata, L. collina, L. hosii, L. micropogon, L. poeciloptera, and L. tenebrica).^[1]

There are currently 7 recognized species in this genus:^[2]

• Leiocassis aculeata H. H. Ng & Hadiaty, 2005^[3]
• Leiocassis bekantan H. H. Ng & H. H. Tan, 2018^[4]
• Leiocassis collina H. H. Ng & K. K. P. Lim, 2006^[1]
• Leiocassis micropogon (Bleeker, 1852)
• Leiocassis poeciloptera (Valenciennes, 1840)
• Leiocassis rudicula H. H. Ng & Hadiaty, 2019
• Leiocassis tenebrica H. H. Ng & K. K. P. Lim, 2006^[1]

As of August 2025^[update], both FishBase and WoRMS list 14 species.^[5][6]