Greater Redhorse
(Moxostoma valenciennesi)
The greater redhorse is the rarest of seven species of redhorse suckers found in Ohio. They are large bottom feeding fish that are often mistaken for carp. However these fish, unlike carp, are indicators of a healthy river system and are native to the state of Ohio.
Description
The greater redhorse has a relatively large rounded head and small eyes. The rear edge of the dorsal fin is nearly straight to slightly convex (outwardly rounded) and they have a bright red tail. They are only found in the Lake Erie basin in Ohio. The very similar river redhorse has a less rounded head, larger eye, and a slightly concave (curves in toward body) rear edge to the dorsal fin. Shorthead and smallmouth redhorse have smaller heads, more slender bodies, and obviously concave dorsal fins. Ohio's other three redhorse have slate gray tails.
Habitat and Habits
AThe greater redhorse is found in medium to large rivers in the Lake Erie drainage system of Ohio. They are only found in limited portions of the Sandusky, Maumee, and Grand River systems. They are typically found in pools with a clean sand or gravel substrate. They are very intolerant of pollution and turbid (murky) water and are an indicator of good water quality.
Reproduction and Care of the Young
Greater redhorse spawn in April and May. They migrate into rather small streams and spawn at night at the top and bottom ends of shallow riffles. Two males will press a single female between them while all three fish vibrate as eggs and sperm are released. They burry their eggs in fine gravel with their tails. No further parental care is given.