How Long Are Stickleback Fish?
How Long Are Stickleback Fish? DESCRIPTION: Threespine sticklebacks average about two inches in length, with three spines in front of the dorsal fin and no bony plates on their sides. How big do sticklebacks grow? Brook sticklebacks are minnow-sized fish. They usually do not grow much bigger than 60 mm (2.4 in). The biggest ones