Gallery
Benthic (top) and limnetic (bottom) sticklebacks from Paxton Lake. Both are females, the benthic species feeds on invertebrates on the lake bed, whereas the limnetic eats plankton in the surface waters.
A male stickleback from the limnetic-like population in North Lake, on the Sechelt peninsular. Note the slim build and the small size compared to the Brannen lake fish below.
A female stickleback from the benthic-like population in Brannen Lake, Vancouver Island. Both this and the North Lake fish are asleep after a brief exposure to Perrier...