Longtail Knifefish
NameLongtail Knifefish
Scientific NameSternopygus macrurus
Common NamesLongtail Knifefish, Knifefish
FamilySternopygidae
OriginSouth America, Amazon Basin, Orinoco Basin
Temperamentsemi-aggressive
Dietcarnivore
Care Levelintermediate
Minimum Tank Size (Gallons)180
Max Size (Inches)24
Water TypeFreshwater
Temperature Range (°F)72-82
pH Range6.0-7.5
Compatible SpeciesOscar Cichlid, Green Terror Cichlid, Jack Dempsey Cichlid, Large Plecos, Synodontis Catfish, Arowana
Description
The Longtail Knifefish is a fascinating nocturnal freshwater fish known for its elongated, knife-like body and the ability to generate a weak electric field for navigation and communication. Reaching impressive sizes, it requires a very large aquarium with plenty of hiding places.
