Amblycipitidae (torrent catfishes) (2)
Amphiliidae (loach catfishes) (4)
Ariidae (sea catfishes) (54)
Aspredinidae (banjo catfishes) (1)
Astroblepidae (Astroblepid catfish) (1)
Auchenipteridae (Driftwood catfish) (17)
Bagridae (naked catfishes) (41)
Callichthyidae (callichthyid armored catfishes, mailed catfishes, and plated catfishes) (4)
Cetopsidae (whalelike catfishes) (1)
Chacidae (angler catfishes and squarehead catfishes) (1)
Clariidae (airbreathing catfishes) (27)
Claroteidae (11)
Diplomystidae (diplomystid catfishes) (1)
Doradidae (thorny catfishes) (10)
Heptapteridae (9)
Heteropneustidae (airsac catfishes) (1)
Ictaluridae (bullhead catfishes and North American freshwater catfishes) (19)
Loricariidae (armored catfishes and suckermouth armored catfishes) (36)
Malapteruridae (electric catfishes) (3)
Mochokidae (naked catfishes, squeakers, and upside-down catfishes) (26)
Pangasiidae (giant catfishes) (11)
Pimelodidae (flat-hosed catfishes and long-whiskered catfishes) (37)
Plotosidae (eeltail catfishes) (11)
Pseudopimelodidae (2)
Schilbeidae (glass catfishes and schilbid catfishes) (11)
Scoloplacidae (Scoloplacid catfish) (2)
Siluridae (freshwater catfishes and sheatfishes) (15)
Sisoridae (sisorid catfishes and sucker catfishes) (8)
Trichomycteridae (parasitic catfishes and pencil catfishes) (6)

(...) = Species count