Subfamilies in family :
Gymnotidae
Ref: Craig JM, Kim LY, Tagliacollo VA, Albert
JS (2019)
Phylogenetic revision of Gymnotidae
(Teleostei: Gymnotiformes), with descriptions of
six subgenera.
PLoS ONE 14(11): e0224599.
http://doi.org/10.1371/journal.pone.0224599
