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Brazos River Watersnake vs. Plain-bellied Watersnake

Both live along the upper Brazos River and its creeks. A: Four rows of small dark spots on olive-brown in the Brazos River Watersnake; plain dark brown, olive or grey (adults) in the Plain-bellied Watersnake. B: Pinkish-orange, with a row of small dark spots along each edge in the Brazos River Watersnake; plain yellow to orange-red, with no spots in the Plain-bellied Watersnake. Young Plain-bellied Watersnakes are blotched; their bellies are already plain.

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Brazos River Watersnake

Nerodia harteri

Plain-bellied Watersnake

Nerodia erythrogaster
Brazos River Watersnake vs. Plain-bellied Watersnake: comparison sheet with the differences marked

Photographs via iNaturalist under Creative Commons licences; the photographers are credited on the sheet.

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