Rhinochimaeridae, commonly known as long-nosed chimaeras, is a family of cartilaginous fish. They are similar in form and habits to other chimaeras, but have an exceptionally long conical or paddle-shaped snout. The snout has numerous sensory nerve endings, and is used to find food such as small fish. The first dorsal fin includes a mildly venomous spine, used in defence.
Long-nosed chimaeras are found in temperate and tropical seas worldwide, from 200 to 2,000 metres (660 to 6,600 ft) depth. They range from 60 to 140 centimetres (2.0 to 4.6 ft) in maximum total length, depending on species.