Three-toed Amphiuma vs. Red River Mudpuppy
Both live in the rivers, oxbows and sloughs of the Red River and Arkansas River basins. A: No outside gills in the Three-toed Amphiuma; bushy red gills behind the head, kept for life in the Red River Mudpuppy. B: Very long and eel-like, plain dark above and sharply paler below in the Three-toed Amphiuma; stout, shorter, brown with bold dark spots in the Red River Mudpuppy.
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