Bluefin Tuna
Thunnus orientalis
Also known as: Pacific Bluefin; PBT
Size & Weight
Average Length
70.8"
Max Length
118.0"
Average Weight
200.0 lbs
Max Weight
990.0 lbs
Lifespan
26 years
Habitat
Depth Range
0 - 650 ft
Water Temp
60-72°F
Open ocean; pelagic; highly migratory; warm currents
Behavior
Spawning Season
Western Pacific spawning grounds
Migration: Trans-Pacific; spawn Western Pacific; juveniles migrate east
Diet: Fish; squid; crustaceans
Fishing Tips
PNW Season
Summer-fall when present
Techniques: Trolling; live bait; kite fishing; heavy tackle
Best Bait: Live sardines; mackerel; squid; trolling lures
Eating Quality
Edibility
Excellent
Premium sashimi grade; rich; high value
State Records
Washington
92.15
lbs
California
395.0
lbs
Fun Facts
Most valuable fish per pound; can exceed 1000 lbs; warm-blooded; prized for sushi
How to Identify
Most valuable fish per pound; can exceed 1000 lbs; warm-blooded; prized for sushi; trans-Pacific migration
Commonly Confused With
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Official Resources
Sources: NOAA; CDFW
Change History (Last updated Feb 04, 2026 at 06:03 AM)
| Date | Change | Old Value | New Value |
|---|---|---|---|
| Feb 04, 2026 06:03 AM | Added image | — | species-83-277f4c914094cc7b.jpg | Source: Monterey Bay Aquarium |
| Feb 02, 2026 10:33 AM | Updated CA State Record | 395.38 | 395.0 |
| Feb 02, 2026 10:33 AM | Updated Avg Length | — | 70.8 |