Mutant skate named Elvis caught by Portsmouth fishermen
A Museum fish curator has identified a skate's unusual appendage as an extra pelvic fin, rather than a genetic throwback to its shark relative. An unusual skate has been caught by fishermen in the Solent with an extra fin.It was taken to the Portsmouth Blue Reef Aquarium for identification, where it is now being held for safekeeping.Aquarium staff have nicknamed it Elvis because the fin resembles a quiff. Read rest here :
It does beg the question could cryptids be mutants or hybrids or even mutated as the result of interbreeding? Would explain their scarcity.