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The knife resembles a small reciprocating saw. Electric fillet knives allow the user to cut faster than using a traditional fillet knife. [7] Electric fillet knives are usually in the professional setting such as guides and those in the fish processing industry but are readily available to the general public as well.
Aside from the electric eel (Electrophorus electricus), Gymnotiformes are slender fish with narrow bodies and tapering tails, hence the common name of "knifefishes". They have neither pelvic fins nor dorsal fins , but do possess greatly elongated anal fins that stretch along almost the entire underside of their bodies.
The electric eel is the largest of the gymnotiform fishes, growing up to more than 2 m (6.6 ft) length. Species of Gymnotus range from about 10–100 cm (0.3–3.3 ft) in total length. [3] [4] These knife fishes also use electricity to assist in their movement and navigation in the water due to their limited vision. [5]
Gymnotus species are nocturnal and mainly feed on aquatic insects, crustaceans, small fish and other small animals, [9] but may also take plant material. [8] Being electric fish , they generate weak electric fields used for navigation, finding prey and communicating with other individuals of their species.
The Hypopomidae are a family of fishes in the order Gymnotiformes known as the bluntnose knifefish.They may also be called grass or leaf knifefishes. [1] These electric fish are not often eaten, of little commercial importance, rarely kept as aquarium fish, and poorly studied; however, species in this family may constitute a significant fraction of the biomass in the areas they inhabit.
The African knifefish, Gymnarchus niloticus – also called the aba aba [a] – is an electric fish, living at the bottoms of rivers and lakes. It is the only species in the genus Gymnarchus and the family Gymnarchidae, within the order Osteoglossiformes. [1] [2] It is a long slender fish with no pelvic or anal fins, and a tail fin shaped like ...