What kind of Chinese fighter buzzed P-8 last week?

Just out of curiosity, I'm wondering what model of fighter jet buzzed
that P-8 Poseidon patrol plane last week:

http://static3.nydailynews.com/polop...nterceptor.jpg

It could be either be the Shenyang J-11, J-15, or J-16, all nearly
identical to each other in appearance and to the similar Russian models
they are based on.

The J-16 is rumored to have already been deployed, and this looks like
they might have wanted to show it off. This also fits with their
strategy of "anti-access and aerial denial," showing that they now have
the air power to enforce whatever they deem to be their territorial
airspace.