Rabbitfish

• anatomíaIt has a single fused tooth plate rather than separate teeth, and the males carry an extra retractable organ on the forehead whose role in breeding is still not fully understood.
• Its lineage split from that of sharks and rays more than four hundred million years ago: the chimaeras are the oldest living group of cartilaginous fish, and their fossil relatives are known from before the dinosaurs existed.
• The males have a retractable appendage with spines on the forehead, called a tenaculum, which they use to hold the female during mating, an organ with no equivalent in any other vertebrate.
• Its eyes, huge and a reflective green, gather the faint light of the depths where it lives, and shine when lit up like a cat's.

Skeleton type

Vertebrate - cartilaginous skeleton (fish)

Habitat and environment

Continental slope bottoms of the north-eastern Atlantic and the Mediterranean, between 300 and 1,000 metres

Sexual maturity

11.4 years

Gestation / incubation

10 months of egg incubation

Litter / clutch size

22

Sources consulted: https://es.wikipedia.org/wiki/Chimaera_monstrosa