ods dot nih dot gov
health professional fact sheet
Omega 3 fatty acids
https://ods.od.nih.gov/factsheets/Omega3FattyAcids-HealthProfessional/
Lists how much of 3 kinds of Omega 3 fatty acids different foods have
Only ALA has an established recommended amount so far last time I read the article
As far as I know other 2 types of fatty acids are only found in life forms that grow in water or animal products from animals fed life forms that grow in the water. Such aquatic life forms are not exclusively animals