Assertion: electric eel's family | /r/HasProperty | gymnotidae
Facets:
Source sentences:
text: They are placed in three families: Gymnotidae (often called gymnotid “eels”);
text: The families Gymnotidae and Hypopomidae are most diverse (numbers of species) and abundant (numbers of individuals) in small nonfloodplain streams and rivers, and in floodplain "floating meadows" of aquatic macrophytes (e.g., Eichornium, the Amazonian water hyacinth).