side view of Blue Moor frog (Rana arvalis) on bright background. Males can develop bright blue coloration for a few days during the breeding season i

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side view of Blue Moor frog (Rana arvalis) on bright background. Males can develop bright blue coloration for a few days during the breeding season in march or april.

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Size: 5314px × 3543px
Photo credit: © Rudmer Zwerver / Alamy / Afripics
License: Royalty Free
Model Released: No

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