The Largemouth bass are medium-sized, deep-bodied fish, with back and sides that are green to olive, and a belly that is yellow to white. They have a broken horizontal stripe along their body, with 9 to 11 dorsal fin spines; a deep notch between dorsal fins. Unlike the Smallmouth Bass, the Largemouth Bass have an upper jaw that extends beyond the eye.
The Largemouth Bass can grow between 25 cm – 55 cm, with a weight of 0.7 – 1.8 kilograms. The Ontario record for biggest Largemouth Bass is 4.7 kilograms.
These fish can be best found in southern Ontario through the lower Great Lakes, with some populations in Northwestern Ontario. They like to live in warm, weedy water or clear, rocky lakes. They can also be found living in shallow muddy ponds, or slow-moving rivers.