Now I know Omega-3 fatty acids is also called ω−3 fatty acids or n−3 fatty acids or long-chain n-3 fatty acids.

Now I know Omega-3 fatty acids is also called ω−3 fatty acids or n−3 fatty acids or long-chain n-3 fatty acids. 

Omega-3 fatty acids (also called ω−3 fatty acids or n−3 fatty acids[1]) refers to a group of three fats called ALA (found in plant oils), EPA, and DHA (both commonly found in marine oils). Common sources of omega–3 EPA and DHA fatty acids include fish oils, algal oil, egg oil, squid oils, krill oil and some plant oilscontain the omega 3 ALA fatty acid such as flaxseed oil, Sacha Inchi oil, Echium oil, and hemp oil.

For more info, please visit http://en.wikipedia.org/wiki/Omega-3_fatty_acid