New answers tagged ichthyology
I looked your strange fish and I think that it is a short horned sculpin because of its spikes.So, don't imagine that it is a sea robin because sea robins live in very deep waters (500 meters depth aproximately).In fact, I think that this sculpin was trapped in the river while it was going to the sea and the fishermen caught it.
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 ...
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