There was an era when divers thought these freshwater South American fish were as nasty as sharks.
It was considered \brave\ to swim with piranah! Later it was revealed they don’t attack anything not bleeding or injured, as per sharks in some cases.
Their teeth are almost identical with bull sharks. Triangular also as per white pointer/great white sharks.
This preserved piranah is a large example.
Former **Sydney Sea Hunters** witnessed a school of small leatherjacket turning \cannibal\ (reminding them of piranah) on injured comrades.
At \Fairy Bower\, Manly, the Sydney beach and headland.
**Footnote: Check our other blog. http://www.fathomoz.com Also two experiments there with video blogging.**