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Southern Dwarf Siren vs. Lesser Siren

Southern Dwarf Sirens and Lesser Sirens share weedy ponds, ditches and marshes in north and central Florida. A: Pale yellow or tan stripes along the body in the Southern Dwarf Siren; plain olive to black with fine black dots in the Lesser Siren. B: Small and slender (4 to 10 in), with small feathery gills in the Southern Dwarf Siren; bigger (7 to 27 in), with bushy gills in the Lesser Siren. Count the toes on the tiny front legs: three in dwarf sirens, four in Lesser and Greater sirens.

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Southern Dwarf Siren

Pseudobranchus axanthus

Lesser Siren

Siren intermedia
Southern Dwarf Siren vs. Lesser Siren: comparison sheet with the differences marked

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

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