Multi-format highly-detailed 4-sides poly model of fish (Oncorhynchus nerka). ZBrush model have 7 levels of subdivisions from 305 verexes to approximate 1243000 vertexes. Also this pack include Maya model (2010) and OBJ file with Diffuse, Normal and 32-bit Displacment map (4096x4096 pixels).
Oncorhynchus nerka
Geographic Range Currently, range is limited to Pacific Ocean, Columbia and Snake Rivers, and Redfish Lake (Idaho).
Habitat At different life stages, sockeye inhabit both fresh and salt water. They need loose gravel to make redds, and juveniles especially need unobstructed river passages and a strong water flow.
Reproduction Sockeye Salmon, like all Pacific salmon, are anadromous. Though they live in the ocean, they return to fresh water to spawn. Adults enter the Columbia River in June and July, ascending the river at about 13 miles per day. Those individuals that survive arrive at Redfish Lake in August, and there they take four to eight weeks preparing to spawn. It is then that the fish develop a reddish orange body color, the females swell with mature eggs, and the males develop hooked jaws. In October, the females construct nests (redds) in a gravel depression for 50 to 100 eggs. The eggs are then fertilized by the male. This process is repeated until the female has deposited about 2000 eggs. The adults die within a few weeks of spawning. The eggs incubate until April or May, then hatch, and the young begin to feed. One or two years later, the smolts begin to migrate to the Pacific, where they live for one to three years before returning to the river.
Behavior Pacific salmon have an incredible ability to find and return to their home river. The salmon are guided home by the characteristic odor of the parent stream. It is during the smolt's migration that the smell is imprinted. The sun may also play a role in directing the salmon.
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