In Big Bass Bonanza slot by Pragmatic Play you get to fish up the biggest wins, the 5×3 videoslot with 10 paylines where the Fisherman (also known as Olaf by certain streamers) is the only one that can collect or bring more Fish symbols on the screen.
During the Free Spins, the Fisherman can increase the multiplier up to 10x or activate the Dynamite Feature which transforms random symbols into Fish symbols.
From Pragmatic Play