Top definition
A fish that resembles a knife and will stab you or their prey to kill them. they are deadly and disguise themselves to look like cute little blob fish or even sometimes sting rays. They are very dangerous and are actually the fish that killed Steve Irwin.
Just get a bigger knife and they will crap their pants. They also make great sushi
Steve Irwin dives in water. Comes out with a knifefish in is heart.
via giphy
by Toby.H May 07, 2017
Get the mug
Get a Knifefish mug for your girlfriend Jovana.