Mountain Brook Lamprey (Ichthyomyzon greeleyi)


The Mountain Brook Lamprey has a fragmented distribution across the entire Ohio River basin from Alabama to New York. Adults are found in small upland streams with gravel substrates while larvae (ammocoetes) are found along river banks in soft substrate. Mountain Brook Lampreys are non-parasitic, meaning they do not have functional teeth on their oral disc and do not feed as adults.