I would like to know if salmon is rich in fat, and if this fat is good or not. What kind of fat (e.g. in salmon) reduces bad cholesterol?

Sebastian Neumann

Fish and shellfish are generally lower in fat than meat, poultry or full-fat dairy products. Compared to other fish like codfish or plaice, salmon has a higher fat content (10-20%). This fat is more unsaturated, and richer in omega-3 fatty acids and therefore better for your health.
Omega-3 fatty acids have a positive effect on cardiovascular health, protecting against heart disease. Researchers suggest they may have a role in preventing macular degeneration, a common form of blindness, and have beneficial effects in some depressive disorders. It is recommended that you eat fish rich in omega-3s twice a week in order to reap specific health benefits.

Omega-3 content of fish (amounts are in grams per 100 g portion)
salmon (Pacific), wild 2.2
salmon (Atlantic) farmed, cooked, dry heat 1.8
sardine (Pacific), canned in tomato sauce 1.4
herring (Atlantic), pickled 1.2

See also:

EUFIC
http://www.eufic.org/gb/food/pag/food38/food381.htm

and
http://www.eufic.org/en/quickfacts/fats_chapter.htm