Wildsight
Compare two species

Sierra Garter Snake vs. Aquatic Garter Snake

These two stream garter snakes meet in the far north (Shasta County); their records touch there. A: A checkerboard of dark blotches, the middle stripe faint, short or missing in the Sierra Garter Snake; usually a bold yellow or orange stripe in the Aquatic Garter Snake. The Aquatic Garter Snake usually has a bright yellow throat; some Aquatic Garters on the coast have no middle stripe, so range helps.

Open this comparison in Wildsight

Sierra Garter Snake

Thamnophis couchii

Aquatic Garter Snake

Thamnophis atratus
Sierra Garter Snake vs. Aquatic Garter Snake: comparison sheet with the differences marked

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

More comparisons

Wildsight identifies the reptiles and amphibians of the United States. Every comparison