Blackmouth catsharks, the species that our skinless wonder belongs to, are actually part of the large Elasmobranch family of fish. This family of fish includes sharks, sawfish, and rays – and are mainly known for having a skeleton made from cartilage instead of bones.
The Elasmobranch fish have been around for a long time – dating all the way back to the time of the dinosaurs! This puts them to be as old as 145 to 66 million years ago – that’s quite something! Elasmobranch fish are also known for having broad, flattened gills, from which they also derive their name – in Ancient Greek.- Elasmo means ‘plate’, while branchia translates to ‘gills’.