Get to know rainbow trout: identifying features, habitat, food, and life cycle.
Identification & habitat
- Scientific name: Oncorhynchus mykiss; salmon family.
- Color: Pink-red stripe along the sides.
- Spots: Black spots on body and tail.
- Fins: Soft-rayed, with a small fleshy adipose fin.
- Tail: Noticeably forked.
- Habitat: Cold, well-suited streams, springs, and tailwaters.
- Missouri waters: Includes spring-fed Ozark streams and Lake Taneycomo.
- Regional size: Common stocked fish around 10–15 inches, with larger fish possible.
Food & behavior
- Food: Aquatic and terrestrial insects, snails, and small fish.
Spawning, growth & lifespan
- Nest: Female excavates clean gravel and covers the eggs.
- Parenting: No care after egg deposition and covering.
- Timing: Wild Ozark spawning can occur December–February; hatchery strains differ.
- Growth: Hatchery fish can reach ten inches in the first year.
Angling & the bigger picture
- Population: Most Missouri fisheries rely on regular stocking; some wild populations reproduce.
Sources & further reading
Research checked October 18, 2026. Common sizes and ages are examples rather than hard limits. Missouri spawning dates are regional unless another location is named. Consult the current local fishing rules for the water you plan to fish.