Deep beneath the sea off the coast of California, there is a species of eel-like fish with a huge head, bulging eyes and a mouth full of transparent, fang-like teeth. Aristostomias scintillans is a 15 ...

It's the sort of fish that HR Giger might have had in his aquarium, a mysterious catfish with more teeth than you'd expect, that has left scientists scratching their heads and comparing it to Alien ...