Idaho Fishing Size Limits
Legal minimum sizes and daily limits for fishing in Idaho. Updated for 2026.
Idaho Fish Size Limits
Complete guide to legal fish sizes in Idaho. Find minimum sizes, slot limits, and daily limits for all regulated species. Updated for 2026.
Fish Species
3
With Size Limits
1
No Size Limit
2
Updated
2026
Fish Size Limits
1 species with minimum size requirements in Idaho
| Species | Size Limit | Daily Limit | Notes |
|---|---|---|---|
| | Varies by water | 6 | - |
No Statewide Size Limit
Species with daily limits only (no minimum size)
| Species | Daily Limit | Notes |
|---|---|---|
| | 2 | Seasonal; check specific river rules |
| | Varies | Highly regulated by run and river |
- Regulated species
- Steelhead, Rainbow Trout, Salmon
- Minimum lengths
- Rainbow Trout Varies by water
- Daily-limit only
- Steelhead, Salmon
- Issuing agency
- Idaho Department of Fish and Game
Need the regulatory background? How fish size limits work covers minimums, slots, and proper measurement.
Idaho Fishing Regulations Overview
State fish and wildlife agency information
- Fish Species
- 3 species with regulations
- Species with Size Limits
-
- Rainbow Trout
- Fish & Wildlife Agency
- Idaho Department of Fish and Game
This information is for reference only. Always verify regulations with your state wildlife agency before hunting or fishing.
Last verified: January 2026
Idaho Fishing Size Limits FAQ
Common questions about fish size regulations in Idaho
What is the trout size limit in Idaho?
Idaho trout regulations: Varies by water. Daily limit is 6. Some waters may be catch-and-release only.
Which fish have size limits in Idaho?
Idaho enforces size limits on 1 species including: Rainbow Trout (Varies by water). Always verify current regulations before fishing.
Which Idaho fish have daily limits but no size minimum?
2 species are managed in Idaho by daily creel limit only: Steelhead (2), Salmon (Varies).
Other States
View fishing size limits for more states
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