Reticulated Siren vs. Lesser Siren

Lesser Sirens share the Reticulated Siren's swamps and ponds. A: Covered with a net of large, dark, irregular spots in the Reticulated Siren; grey to olive, at most small round dots in the Lesser Siren. B: Small and narrow in the Reticulated Siren; broader in the Lesser Siren. The Reticulated Siren is far bigger (about 2 ft), with 38 to 42 grooves along the side (31 to 38 in the Lesser).

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

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