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The phylogenetic relationships of Asian schilbid catfishes of the genera  Clupisoma ,  Ailia ,  Horabagrus ,  Laides  and  Pseudeutropius  are poorly understood, especially those of  Clupisoma . Herein, we reconstruct the phylogeny of 38 species of catfishes belonging to 28 genera and 14 families using the concatenated mitochondrial genes  COI ,  cytb , and 16S rRNA, as well as the nuclear genes  RAG1  and  RAG2 . The resulting phylogenetic trees consistently place  Clupisoma  as the sister taxon of  Laides , and the five representative Asian schilbid genera form two monophyletic groups with the relationships ( Ailia  ( Laides ,  Clupisoma )) and ( Horabagrus ,  Pseudeutropius ). The so-called “Big Asia” lineage relates distantly to African schilbids. Independent analyses of the mitochondrial and nuclear DNA data yield differing trees for the two Asian schilbid groups. Analyses of the mitochondrial gene data support a sister-group relationship for ( Ailia  ( Laides ,  Clupisoma )) and the Sisoroidea and a sister-taxon association of ( Horabagrus ,  Pseudeutropius ) and the Bagridae. In contrast, analyses of the combined nuclear data indicate ( Ailia  ( Laides ,  Clupisoma )) to be the sister group to ( Horabagrus ,  Pseudeutropius ). Our results indicate that the Horabagridae, recognized by some authors as consisting of  Horabagrus ,  Pseudeutropius  and  Clupisoma  does not include the latter genus. We formally erect a new family, Ailiidae fam. nov. for a monophyletic Asian group comprised of the genera  Ailia ,  Laides  and  Clupisoma .

Phylogenetic Relationships of Five Asian Schilbid Genera Including Clupisoma (Siluriformes: Schilbeidae)