Chum Salmon Spawning | Oncorhynchus keta

These are chum salmon (Oncorhynchus keta) swimming in a shallow river in Hokkaido, Japan. The fish are preparing to spawn after spending one to three years at sea. The individual in the foreground is female, the larger two in the background males. Females dig shallow nests at the edges of waterflow to deposit eggs, which are fertillized by a partner male, sometimes multiple males. The female covers fertilized eggs with gravel.

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Image Size: 7461x4197 / 89.7MB; https://www.photoshelter.com/support/license#rm; https://www.tony-wu.com/contact-tony-wu; Bony Fish Salmon Animalia Chordata Osteichthyes Actinopterygii Salmoniformes Salmonidae Oncorhynchus Oncorhynchus keta Chum Salmon Dog Salmon Keta Salmon Sake Reproduction Spawning Freshwater Pacific Japan Hokkaido
Contained in galleries: Marine Life Reproduction, Fish Photos, Marine Life | Japan

These are chum salmon (Oncorhynchus keta) swimming in a shallow river in Hokkaido, Japan. The fish are preparing to spawn after spending one to three years at sea. The individual in the foreground is female, the larger two in the background males. Females dig shallow nests at the edges of waterflow to deposit eggs, which are fertillized by a partner male, sometimes multiple males. The female covers fertilized eggs with gravel.