A colorful Spinecheek anemonefish, Premnas biaculeatus, swims above the tentacles of its host anemone in Indonesia. This is a mutualistic symbiosis.

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Size: 5400px × 3600px
Location: Lembeh Strait, Indonesia
Photo credit: © Ethan Daniels / Alamy / Afripics
License: Licensed
Model Released: No

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