Species in the Rhinochimaera
family are known as long-nosed chimaeras.
Their unusually long snouts (compared to other chimaeras) have sensory
nerves that allow the fish to find food. Also, their first dorsal fin
contains a mildly venomous spine that is used defensively. They are
found in deep, temperate and tropical waters between 200 to 2,000 m in
depth, and can grow to be up to 140 cm (4.5 ft) in length.Chimaeras (also known as ghost sharks and ratfish) are an order
of cartilaginous fish most closely related to sharks, but they have
been evolutionarily isolated from them for over 400 million years.
(Info from WP and .gif from video by NOAA’s Okeanos Explorer—this is not an animation!)