Scientists have discovered the smallest known fish in the world. Found in swamps on Sumatra, Paedocyprisis only 7.9mm long. Unfortunately, their diverse habitat, home to other species that aren't found anywhere else, is threatened by logging, agriculture, and the spread of cities. From London's Natural History Museum:
The tiny, see-through Paedocypris fish have the appearance of larvae and have a reduced head skeleton, which leaves the brain unprotected by bone.They live in dark tea-coloured waters with an acidity of pH3, which is at least 100 times more acidic than rainwater.
'This is one of the strangest fish that I've seen in my whole career', said Ralf Britz, zoologist at the Natural History Museum.
'It's tiny, it lives in acid and it has these bizarre grasping fins. I hope we'll have time to find out more about them before their habitat disappears completely.'
