blue-green knifefish (Sternopygus aequilabiatus), electric eel (Electrophorus electricus) II. Gymnotus aequilabiatus. = blue-green knifefish (Sternopygus aequilabiatus)
I. Gymnotus electricus. = electric eel (Electrophorus electricus)
Deutsch: Sternopygus aequilabiatus aequailabiatus (Humboldt, 1805), elektrisches Organ von Electrophorus electricus (Linnaeus, 1766)
Date 180x
Source Alexander v. Humboldt: Beobachtungen aus der Zoologie und Vergleichenden Anatomie gesammelt auf einer Reise nach den Tropen-Ländern des neuen Kontinents, in den Jahren 1799, 1800, 1801, 1802, 1803 und 1804 von Al. von Humboldt und A. Bonpland. Bearbeitet und herausgegeben von Ersterem. Tübingen, bey F. G. Cotta Paris, bey Levrault, Schoell und Compagnie 1806. 14 anatomische Detailzeichnungen.
Author A. Humboldt (Alexander von Humboldt) (1769-1859)
Source: https://commons.wikimedia.org/wiki/File:Sternopygus-aequilabiatus-Humboldt-Zoologie-T10p172.png
The blue-green knifefish (Sternopygus aequilabiatus) is a species of glass knifefishes found in tropical South America and Panama.
The electric eel (Electrophorus electricus) is an electric fish, and the only species in its genus. Despite the name, it is not an eel, but rather a knifefish. Electric eels inhabit fresh waters of the Amazon and Orinoco River basins in South America, in floodplains, swamps, creeks, small rivers, and coastal plains. They often live on muddy bottoms in calm or stagnant waters.