Eigenmannia virescens is a weakly electric freshwater fish found across South America. It is marketed as an aquarium fish. The appendix on the body has...

A dominance signal is used in a dominance hierarchy or pecking order to indicate an animal's dominance. Dominance signals are a type of internal environment...

has been most intensively studied in the South American species Eigenmannia virescens. It is also present in other Gymnotiformes such as Apteronotus,...

B. López & Castello, 1966 Eigenmannia vicentespelaea Triques, 1996 Eigenmannia virescens (Valenciennes, 1836) Eigenmannia waiwai L. A. W. Peixoto, Dutra...

black ghost knifefish (Apteronotus albifrons), the glass knifefish (Eigenmannia virescens), and the banded knifefish (Gymnotus carapo). Aside from the electric...

representations to perform further processing. In the gymnotiform fish, Eigenmannia illustrated here, the primary sensory neurons in the electroreceptor...

color pattern and morphology, it is included in the E. virescens species group with E. virescens, E. trilineata, and a third undescribed species. The only...

covers). The maximum length is 140 cm (55 in) in Sternopygus macrurus. Eigenmannia vicentespelaea is the only cave-dwelling gymnotiform. Humboldtichthys...

knifefish Apteronotus leptorhynchus 27 cm (10.5 in) Glass knifefish Eigenmannia virescens 44 cm (17.5 in) Electric eel Electrophorus electricus 200 cm (78...

Dasyloricaria filamentosa Dasyloricaria seminuda Dupouyichthys sapito Eigenmannia virescens Eremophilus mutisii Farlowella yarigui Gasteropelecus maculatus...

common species with which it coexists in the same region include Eigenmannia virescens, Roeboides dayi, Cyphocharax magdalenae, Triportheus magdalenae...