Ok I didn't know where to put this but it would be good to have a place to post a pokemon you get in a trade and feel may have been hacked. You should post as much detail about it as possible; such as the reasons you think it could be hacked.
Here is the pokemon I think may be hacked; I don't have much information other than the story of where I got it:
It is a shiny Latias, all the info checks out such as stats, although I didn't put it into a lvl 100 battle it's still 40 so it may have 255 EVs and 31 IVs in every stat. The reason it seems dubious to me is that I traded a shiny buizel for it, the guy claimed because he collects shiny buizel/floatzel and said he said about a dozen of each. If anyone was on PC the other day it was the guy who asked people to list their shiny water types and then offered shiny legends for them, I've lost sight of the thread so I don't know if he was found out as a hacker