noun
knifefish
Refers to freshwater fish of the family Notopteridae or Gymnotidae, known for their elongated, knife-like body shape. Used in aquarium and biological contexts.
ナイフフィッシュは細長い体型が特徴です。
Knifefish are characterized by their elongated body shape.
水族館でナイフフィッシュを見た。
I saw a knifefish at the aquarium.