The big stick has become one of the really serious environmental problems in the Baltic Sea…

There are fifty times more sticklebacks in the Baltic Sea today than in the late 1980s. The small fish threatens the regrowth of the pike…

The Baltic coast has undergone a regime change, write researchers at Stockholm University in a new study. The inland sea, where pike and perch dominate the coasts, is on its way out. Now it’s the little big stickleback that slowly but surely seems to be gaining the upper hand…