This is a heavy-bodied snake, tan to brown with a large dark netlike pattern formed of dark blotches on its back connected with alternating dark bars on its sides. This snake is ivory underneath with a canary yellow throat.
Males have pimple-like bumps on the chin scales.
This species mates in spring and bears 14 to 62 live young from August to October. The young are 9 to 13 inches long. Habitat Diamond Watersnakes are most often found in or near water. They eat slow-moving or dead fish and amphibians. These reptiles are found in southwestern Indiana along the Ohio River.