The Candiru Fish
Among the many legends of strange and dangerous creatures that haunt the Amazon rainforest, that of the Candiru stands out from the rest. The Candiru (Vandellia cirrhosa) is a small catfish purported to enter the intimate orifices of unwary, unfortunate people who urinate into Amazonian waterways.
It finds animals to feed from by following the smell of ammonia. That’s not in itself too terrifying, but you’ll be cringing when you hear what that means. Your urine contains ammonia. I hope I don’t have to paint too much of a picture, but basically the Candiru fish follows the trail of ammonia and then does what it does best, sucks blood. Like some other blood sucking animals this one doesn’t just drink its fill and leave, the only way to get rid of it is surgery. This fish is the reason I will never swim in the Amazon. Well, this, piranhas, electric eels, crocodiles and anaconda all in water the clarity or a dark roast coffee.