- Animals
- ›Chordates
- ›Vertebrates
- ›Ray-finned Fishes
- ›Carps, Characins, Catfishes and Allies
- ›Neotropical Knifefishes
- ›Glass Knifefishes
- ›Glass Knifefishes
Eigenmannia
Eigenmannia is a genus of fish in the family Sternopygidae (glass knifefishes) native to tropical and subtropical South America (south to the Río de la Plata Basin), and Panama. They are typically found in slow-flowing streams, along the edge of large rivers, in deep river channels and in floodplains, and the genus also includes E. vicentespelaea, the only cave-adapted knifefish. Eigenmannia are often found near submerged roots, aquatic plants and floating meadows.
Depending on the exact species, they have a maximum total length of 14.3–49.6 cm (6–20 in). They are nocturnal, and feed on small invertebrates such as aquatic insect larvae and zooplanktonic crustaceans.
32 branches of this genus, most-observed first · about 32 known species
Logo logo
speciesEigenmannia virescens
Rattail Knifefish
speciesEigenmannia trilineata
Eigenmannia limbata
speciesEigenmannia limbata
Eigenmannia macrops
speciesEigenmannia macrops
Eigenmannia humboldtii
speciesEigenmannia humboldtii
Meek's Knifefish
speciesEigenmannia meeki
Eigenmannia loretana
speciesEigenmannia loretana
Eigenmannia desantanai
speciesEigenmannia desantanai
Eigenmannia cacuria
speciesEigenmannia cacuria
Eigenmannia bumba
speciesEigenmannia bumba
Eigenmannia robsoni
speciesEigenmannia robsoni
Eigenmannia sirius
speciesEigenmannia sirius
Eigenmannia magoi
speciesEigenmannia magoi
Eigenmannia camposi
speciesEigenmannia camposi
Swordtail Knifefish
speciesEigenmannia zenuensis
Eigenmannia dutrai
speciesEigenmannia dutrai
Eigenmannia catira
speciesEigenmannia catira
Eigenmannia macuxi
speciesEigenmannia macuxi
São Francisco Knifefish
speciesEigenmannia besouro
Eigenmannia sayona
speciesEigenmannia sayona
Black Translucent Knifefish
speciesEigenmannia nigra
Antonio's Knifefish
speciesEigenmannia antonioi
Torrent Knifefish
speciesEigenmannia correntes
Guairaca Knifefish
speciesEigenmannia guairaca
Eigenmannia microstoma
speciesEigenmannia microstoma
Eigenmannia matintapereira
speciesEigenmannia matintapereira
Eigenmannia muirapinima
speciesEigenmannia muirapinima
Eigenmannia oradens
speciesEigenmannia oradens
Cave Knifefish
speciesEigenmannia vicentespelaea
Waiwai Knifefish
speciesEigenmannia waiwai
Eigenmannia pavulagem
speciesEigenmannia pavulagem
Eigenmannia guchereauae
speciesEigenmannia guchereauae
Where it lives
Recorded sightings
—
geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
Searching the stacks…
Every page naming Eigenmannia in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 52561.