WAcanthicus adonis
WAcanthicus hystrix
WAcanthodoras spinosissimus
WAgamyxis pectinifrons
WAncistrini
WAndinichthyidae
WAstroblepus homodon
WBrachyplatystoma platynemum
WBrachyplatystoma rousseauxii
WBrachyplatystoma vaillantii
WDiplomystes nahuelbutaensis
WDupouyichthys sapito
WEmerald catfish
WFarlowella nattereri
WGilded catfish
WGoeldiella
WHog-nosed catfish
WIheringichthys megalops
WIsorineloricaria spinosissima
WItuglanis
WLeiarius arekaima
WLeiarius longibarbis
WLeiarius marmoratus
WLeiarius pictus
WMastiglanis asopos
WNematogenys inermis
WPanaque
WPanaque armbrusteri
WPanaque nigrolineatus
WPhreatobius
WPimelodella
WPimelodella kronei
WPorthole shovelnose catfish
WPterygoplichthys
WPterygoplichthys multiradiatus
WRedtail catfish
WSpiny catfish
WStriped Raphael catfish
WTrachelyopterus insignis
WTrachydoras paraguayensis
WWhiptail catfish
WZebra pleco
WZungaro