You were right about the Portuguese, Six Five. If you'd read the entire Snopes article you'd have read:
"The video is a shortened version of a longer clip that originated on the Brazilian Pesca Rond?nia web site. ("Pesca" is the Portuguese word for "fishing," and Rond?nia is a northern Brazilian state in the Amazonian region known for its great fishing rivers.) The footage was taken in the Guapor? region, on a portion of the Mequens River inside the Porto Rolins Park (a protected conservation area) where fishing is forbidden. The jumping fish shown in the video are matrinx? (Brycon cephalus), a Brazilian fresh water species. "
Also further in the Snopes article there was a link to a video of the
Asian carp filmed on the Mississippi river. (Sorry, I tried to hyperlink it but either the site or my computer is experiencing issues.)
Pretty interesting fish!