External link - taxa
Rhaphiodon vulpinus Spix & Agassiz, 1829 - Biara  | |
| Erythrinus erythrinus (Bloch & Schneider, 1801) - Red Wolf Fish | |
| Hoplerythrinus unitaeniatus (Spix & Agassiz, 1829) - Gold Wolf Fish | |
| Hoplias malabaricus (Bloch, 1794) - Trahira | |
| Pyrrhulina australis Eigenmann & Kennedy, 1903 | |
| Cetopsis gobioides Kner, 1857 BIOLIB: Kner, 1858 | |
| Amaralia hypsiura (Kner, 1855) | |
| Bunocephalus doriae Boulenger, 1902 | |
| Bunocephalus rugosus Eigenmann & Kennedy, 1903 | |
| Ituglanis BIOLIB: Costa & Bockmann, 1993 | |
| Ochmacanthus batrachostoma (Ribeiro, 1912) = Ochmacanthus batrachostomus (Miranda-Ribeiro, 1912) BIOLIB: (Miranda-Ribeiro, 1912) | |
| Parastegophilus maculatus (Steindachner, 1879) = Pseudostegophilus maculatus (Steindachner, 1879) | |
| Paravandellia oxyptera Ribeiro, 1912 - Pantanal Parasitic Catfish BIOLIB: Miranda-Ribeiro, 1912 | |
| Trichomycterus BIOLIB: Valenciennes, 1832 | |
| Corydoras aeneus (Gill, 1858) = Osteogaster aenea (Gill, 1858) - Bronze Catfish | |
| Corydoras areio Knaack, 2000 | |
| Corydoras ellisae Gosline, 1940 = Corydoras aurofrenatus Eigenmann & Kennedy, 1903 | |
| Corydoras hastatus Eigenmann & Eigenmann, 1888 = Gastrodermus hastatus (Eigenmann & Eigenmann, 1888) - Dwarf Corydoras | |
| Corydoras latus Pearson, 1924 = Gastrodermus latus (Pearson, 1924) | |
| Corydoras polystictus Regan, 1912 = Hoplisoma polystictum (Regan, 1912) | |
| Corydoras splendens (Castelnau, 1855) = Brochis splendens (Castelnau, 1855) - Emerald Catfish | |
| Hoplosternum littorale (Hancock, 1828) - Atipa | |
| Hisonotus BIOLIB: Eigenmann & Eigenmann, 1889 | |
| Hypoptopoma inexspectatum (Holmberg, 1893) | |
| Otocinclus vittatus Regan, 1904 | |
| Brochyloricaria macrodon (Kner, 1853) = Brochiloricaria macrodon (Kner, 1853) | |
| Farlowella paraguayensis Retzer & Page, 1997 | |
| Hemiodontichthys acipenserinus (Kner, 1853) - Whiptail Catfish | |
| Loricaria apeltogaster Boulenger, 1895 | |
| Loricariichthys labialis (Boulenger, 1895) | |
| Loricariichthys platymetopon Isbrücker & Nijssen, 1979 | |
| Pyxiloricaria menezesi Isbrücker & Nijssen, 1984 | |
| Rineloricaria cacerensis (Ribeiro, 1912) BIOLIB: (Miranda Ribeiro, 1912) | |
| Rineloricaria hoehnei (Ribeiro, 1912) = Rineloricaria lanceolata (Günther, 1868) - Chocolate-colored Catfish BIOLIB: (Miranda Ribeiro, 1912) | |
| Rineloricaria parva (Boulenger, 1895) - Whiptail Loricaria | |
| Spatuloricaria evansii (Boulenger, 1892) | |
| Sturisoma barbatum (Kner, 1853) | |
| Hypostomus boulengeri (Eigenmann & Kennedy, 1903) | |
| Hypostomus cochliodon Kner, 1854 | |
| Hypostomus latifrons Weber, 1986 - Paraguay Pleco | |
| Hypostomus piratatu Weber, 1986 | |
| Hypostomus regani (Ihering, 1905) | |
| Hypostomus ternetzi (Boulenger, 1895) | |
| Hypostomus BIOLIB: Lacépède, 1803 | |
| Pterygoplichthys anisitsi Eigenmann & Kennedy, 1903 = Pterygoplichthys ambrosettii (Holmberg, 1893) - Royal Plec | |
| Rhinelepis strigosa Valenciennes, 1840 - Parana Pinecone Pleco | |
| Ancistrus cuiabae Knaack, 1999 | |
| Megalancistrus parananus (Peters, 1881) - Gigas pleco | |
| Microglanis cottoides (Boulenger, 1891) | |
| Batrochoglanis BIOLIB: Gill, 1858 | |
| Pseudopimelodus mangurus (Valenciennes, 1835) | |
| Imparfinis guttatus (Pearson, 1924) | |
| Imparfinis stictonotus (Fowler, 1940) | |
| Phenacorhamdia hoehnei (Ribeiro, 1914) BIOLIB: (Miranda Ribeiro, 1914) | |
| Pimelodella gracilis (Valenciennes, 1835) - Graceful Pimelodella | |
| Pimelodella griffini Eigenmann, 1917 | |
| Pimelodella megalura Ribeiro, 1918 BIOLIB: Miranda Ribeiro, 1918 | |
| Pimelodella mucosa Eigenmann & Ward, 1907 | |
| Pimelodella taenioptera Ribeiro, 1914 BIOLIB: Miranda Ribeiro, 1914 | |
| Pimelodella BIOLIB: Eigenmann & Eigenmann, 1888 | |
| Rhamdia quelen (Quoy & Gaimard, 1824) | |
| Hemisorubim platyrhynchos (Valenciennes, 1840) - Porthole Shovelnose Catfish | |
| Hypophthalmus edentatus Spix & Agassiz, 1829 - Highwaterman Catfish | |
| Iheringichthys labrosus (Lütken, 1874) | |
| Luciopimelodus pati (Valenciennes, 1836) - Pati BIOLIB: (Valenciennes, 1835) | |
| Megalonema platanum (Günther, 1880) | |
| Pimelodus absconditus Azpelicueta, 1995 | |
| Pimelodus argenteus Perugia, 1891 | |
| Pimelodus maculatus Lacépède, 1803 - Congo Barbaso | |
| Pimelodus ornatus Kner, 1858 | |
| Pimelodus BIOLIB: Lacépède, 1803 | |
| Pinirampus pirinampu (Spix & Agassiz, 1829) - Flatwhiskered Catfish | |
| Pseudoplatystoma corruscans (Spix & Agassiz, 1829) | |
| Pseudoplatystoma fasciatum (Linnaeus, 1766) - Barred Sorubim | |
| Sorubim lima (Bloch & Schneider, 1801) - Duckbill Catfish | |
| Zungaro zungaro (Humboldt, 1821) - Gilded Catfish | |
| Anadoras weddellii (Castelnau, 1855) | |
| Doras eigenmanni (Boulenger, 1895) = Ossancora eigenmanni (Boulenger, 1895) | |
| Doras punctatus Kner, 1853 = Ossancora punctata (Kner, 1855) BIOLIB: Kner, 1855 | |
| Oxydoras kneri Bleeker, 1862 | |
| Platydoras armatulus (Valenciennes, 1840) - Humbug Talking Catfish | |
| Pterodoras granulosus (Valenciennes, 1821) - Granulated Catfish | |
| Rhinodoras dorbignyi (Kner, 1855) | |
| Trachydoras paraguayensis (Eigenmann & Ward, 1907) | |
| Ageneiosus brevifilis Valenciennes, 1840 = Ageneiosus inermis (Linnaeus, 1766) - Haplochromis Quads | |
| Ageneiosus ucayalensis Castelnau, 1855 | |
| Auchenipterus nigripinnis (Boulenger, 1895) | |
| Auchenipterus osteomystax (Ribeiro, 1918) BIOLIB: (Miranda-Ribeiro, 1918) | |
| Entomocorus benjamini Eigenmann, 1917 | |
| Epapterus dispilurus Cope, 1878 | |
| Parauchenipterus galeatus (Linnaeus, 1766) = Trachelyopterus galeatus (Linnaeus, 1766) BIOLIB: | |
| Tatia neivai (Ihering, 1930) | |
| Tatia BIOLIB: Miranda-Ribeiro, 1911 | |
| Gymnotus inaequilabiatus (Valenciennes, 1839) | |
| Gymnotus paraguensis Albert & Crampton, 2003 | |
| Eigenmannia trilineata López & Castello, 1966 | |
| Eigenmannia virescens (Valenciennes, 1836) - Glass Knife Fish | |
| Eigenmannia BIOLIB: Jordan & Evermann, 1896 | |
| Sternopygus macrurus (Bloch & Schneider, 1801) - Longtail Knifefish | |
| Gymnorhamphichthys hypostomus Ellis, 1912 - Thermometer Knifefish |