Olivaichthys

Olivaichthys
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Siluriformes
Suborder:	Diplomystoidei
Family:	Diplomystidae
Genus:	Olivaichthys Arratia, 1987

Olivaichthys is a genus of velvet catfishes endemic to Argentina.

Recently several authors have synonymized this genus with Diplomystes. A molecular analysis has proposed that trans-Andean Diplomystes and the cis-Andean Olivaichthys are so closely related (in addition to the close morphological similarity), that Olivaichthys should not be recognized. However, this is strange as recent divergence is unlikely with the species on either side of the Andes.

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