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Golden Trout, Oncorhynchus mykiss
		This photo of a Golden Trout was taken by Gerard Carmona Catot.
		Appearance and Identification: · Adult size: in streams up to 19-20 cm SL, in lakes up to 35-43 cm FL, max 71 cm TL (5.0 kg) · Bright coloration: dark olive-green back; golden lower sides; bright red to orange cheeks, underside, and brachiostegals o Parr marks present even in adults: about 10, centered on lateral line o Large spots on tail and dorsal fin, variable spotting on back (Kern River subspecies heavily spotted) o Orange color on pectoral, pelvic, and anal fins; pelvic and anal fins have black band followed by white-yellow tip o Dorsal fin with white to orange tip
Life History:
		California has three distinct subspecies of rainbow trout commonly grouped as golden trout: Kern River rainbow trout, Little Kern golden trout, and California golden trout. Today Kern River rainbows are found in the Kern River between Durrwood Creek and Junction Meadow, though other transplanted populations exist. Little Kern golden trout are still found in their native habitat in the Little Kern River. California golden trout are found in their natal streams of Golden Trout creek and the South Fork Kern River and in addition have been transplanted to many other isolated lakes and locations for the purpose of sportfishing. Many of these transplanted golden trout hybridize with hatchery reared coastal rainbows. Native habitat for golden trout is primarily found at high elevations in meandering streams with little riparian vegetation. The water is generally clear and cold (3-22°C) and substrates are composed of cobble, gravel, and sand. Favorable reaches include pools that provide cover in the forms of undercut banks and aquatic vegetation. Individual golden trout tend to remain in a small stretch of stream measuring 16-18 m. Fish transplants have brought golden trout to lakes and streams they did not previously inhabit. Generally these new waters are at high elevations and may include stretches of stream above impassible fish barriers. Golden trout feed both day and night on a wide variety of items, especially aquatic insects. Cryptic coloration or a lack of predators may account for their feeding habits. Despite increased vulnerability to birds and mammals males develop especially bright colors during the breeding season. Golden trout may live up to 9 years, reaching 10-11 cm SL by the end of their third summer. Their growth rate slows to 1-2 cm/year thereafter and they may eventually reach 19-20 cm SL. Lake dwelling trout arriving via transplants grow more rapidly and reach greater maximum sizes. Golden trout reach sexual maturity in 3-4 years and spawn in late spring or early summer when water temperatures range from 10 to 15°C. Spawning peaks in the afternoon when water temperatures reach their daily maximum. Females dig wide shallow redds among small gravel particles and lay 300-2,300 eggs. The eggs hatch in approximately 20 days at 14°C. Emergent fry remain in the substrate for 2-3 weeks before rising into the main water column. Steelhead/Rainbow Trout
Links to Other Research
	Here's a list of California watersheds where Steelhead/Rainbow trout may be found. © 2003 - Regents of the University of California Division of Agriculture and Natural Resources Communication Services E-Mail Web Master ANR Non-Discrimination Statement