Fenders Fish Hatchery regretfully reports Largemouth Bass are unavailable for the 2021 season. The District apologizes for the inconvenience. 2-3" - Recommended predator species for Ohio ponds. On average, largemouth bass will grow to reach 15-18” and weigh 1-5 lbs. Spawning generally occurs in mid-April to mid-June. Bass feed on other fish, frogs, crayfish and large insects.