A male Sockeye Salmon (Oncorhynchus nerka) fends off an intruding male with the gape threat in an Alaskan stream during early summer.

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Size: 5701px × 3801px
Photo credit: © Thomas Kline/Alaska Stock / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: aggression, alaska, animal, animals, behavior, challenge, confrontation, cordova, day, fish, male, mouth, open, outdoors, pebble, people, prince, rivalry, salmon, side, sockeye, sound, stream, swimming, tributary, underwater, view, wildlife, william