Grand River, Kitchener, Ontario, Canada A Rock Bass inspects the camera while foraging through cadophora in the Grand River

Grand River, Kitchener, Ontario, Canada A Rock Bass forages in the algae at night in the Grand River

Grand River, Kitchener, Ontario, Canada A couple of Rock Bass pass by the camera quickly, hiding in the cladophora algae nearby in the Grand River

Grand River, Kitchener, Ontario, Canada Courting becomes more aggressive, with one Rock Bass chasing the other

Grand River, Kitchener, Ontario, Canada A pair of Rock Bass circle and chase each other, courting during the afternoon in the Grand River

Grand River, Kitchener, Ontario, Canada Several Rock Bass, including one with an injured mouth hide in cladophora that has accumulated in front of the camera in the Grand River

Grand River, Kitchener, Ontario, Canada A pair of Rock Bass continue courting from the previous day in the Grand River

Grand River, Kitchener, Ontario, Canada A pair of Rock Bass court, circling each other while swimming in cladophora