Length 4 1/2 – 5 1/2 in. (11.5-14 cm). It is almost identical to the Small-mouthed Salamander in appearance, but differs in several small, important characteristics. Unlike most members of this family, the streamside prefers to breed in headwater streams lacking predatory fish, rather than ponds. Eggs are attached singly to the underside of rocks in the stream. The Streamside Salamander occurs only in southwestern Ohio and is often seen crossing roads to enter streams in February and March.
Text courtesy of the Ohio Division of Wildlife: https://wildlife.ohiodnr.gov/portals/wildlife/pdfs/publications/id%20guides/pub348.pdf