Hello @yoo1900, candiru one of the inhabitants of the amazon river, this fish can enter through the human urinary tract.
https://steemit.com/strange/@andimalaria/candiru-fish-entering-the-channels
Support minnows , Date 6.8.2018 promote content on Steemit
https://steemit.com/strange/@andimalaria/candiru-fish-entering-the-channels