Reticulated Siren vs. One-toed Amphiuma

One-toed Amphiumas live in seepage swamps of the same south Alabama and panhandle drainages. A: Bushy gills behind the head in the Reticulated Siren; no outside gills in the One-toed Amphiuma. B: Two front legs only in the Reticulated Siren; four tiny legs, one toe on each in the One-toed Amphiuma. The One-toed Amphiuma is small (under 13 in) and plain dark grey-brown.

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

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