Statements (18)
| Predicate | Object | 
|---|---|
| gptkbp:instanceOf | gptkb:fish | 
| gptkbp:characteristic | gptkb:electric_organ elongated body absence of dorsal fin | 
| gptkbp:commonName | naked-back knifefishes | 
| gptkbp:describedBy | gptkb:Theodore_Gill | 
| gptkbp:describedYear | 1864 | 
| gptkbp:distribution | gptkb:Central_America gptkb:South_America | 
| gptkbp:habitat | freshwater | 
| gptkbp:notableMember | gptkb:Electrophorus gptkb:Gymnotus | 
| gptkbp:order | gptkb:Gymnotiformes | 
| gptkbp:taxonRank | gptkb:family | 
| gptkbp:typeSpecies | gptkb:Gymnotus | 
| gptkbp:bfsParent | gptkb:electric_eel | 
| gptkbp:bfsLayer | 7 | 
| https://www.w3.org/2000/01/rdf-schema#label | Gymnotidae |