| |
Coho
Oncorhynchus kisutch |
Sockeye
Oncorhynchus nerka |
Pink
Oncorhynchus gorbuscha |
Chum
Oncorhynchus keta |
Chinook
Oncorhynchus tsawytscha |
| Season which eggs hatch |
Spring |
Spring |
Spring |
Spring |
Spring |
| Length of stay in fresh water |
1 year |
1-3 years
1 is common |
Virtually none. Often straight to ocean |
Little. Directly to Ocean |
3months-1year |
| Size at smoltification |
10 cm or less |
variable
6.5-10cm |
about 3.3cm (24mg) |
4.8cm-5.5cm
(.9g-1.2g) |
3.8cm-10.1cm |
| Length of Ocean Voyage |
1 year |
1-4 years |
18 months |
2-5 years |
3-5 years |
| Age at return to fresh water |
2 years old |
3-5 years old |
about 2 years |
2-5 years but highly variable |
4-6 years |
| Season/month of return |
November-January |
mid summer to late autumn |
August-November |
Both early and late spawning runs |
No particular season. Generally April-August |
| Size of adult |
4 kg (50cm) |
Variable,
about 3 kg |
1.3kg-2.6kg |
45cm-70cm
(about 5kg) |
Up to 45kg |
| Number of eggs per female |
800-1000 |
2000-3000 |
1200-1900 |
1000-7000 |
2000-17000 |
| Prefered Spawning Grounds |
Small tributaries |
Near and in lake systems |
Close to ocean |
Above turbulent areas or upwellings |
Very broad tolerances |
| Other comments |
|
Vary greatly depending on conditions |
Usually a fixed 2 year lifespan |
|
Data is quite variable. Some rear to smolt size in estuary. |
