What is this fish?! Is it even real?
Original Answer



It looks to me like a species of sculpin, for example, the "short-horned sculpin" Myoxocephalus scorpius.



http://www.luontoportti.com/suomi/en/kalat/short-horn-sculpin



Best answer



After some deliberation, and it appears the other very good answer was for some reason removed: the OP fish appears to be a northern sea robin Prionotus carolinus. 



This conclusion comes from the aid of user chauxvive, so much thanks for the identification, though his answer is oddly gone. The conclusion is based off of (1) the morphology of the head and face plate, (2) the longer and tapered pectoral fins, (3) the distinguishing long feelers at the sides anterior to the pectoral fin, and (4) the more probable distribution.