Eicosatrienoic acid shortly known as 20:3w-3 is a rare polyunsaturated fatty acid of omega-3 series. In humans, it symbolizes less than 0.25% of serum phospholipid fatty acids. It is most active essential fatty acids when analyzed for inhibition of fatty acid elongation or desaturation reactions that convert C-18 fatty acids to C-20 eicosanoid precursors.

Food Sources
| Food name | Weight (g) | Eicosatrienoic Acid (g) |
| Kielbasa | 370 | 0.085 |
| Pork bacon | 113 | 0.033 |
| Plantains, green | 118 | 0.017 |
| Peanuts | 146 | 0.016 |
| Flaxseed oil | 13.6 | 0.011 |
| Meatballs | 85 | 0.010 |
| Pizza | 227 | 0.009 |
| Pork sausage | 23 | 0.009 |
| Lobsterr | 145 | 0.009 |
| Sockeye salmon | 85 | 0.008 |
| Trout fish | 149 | 0.007 |
| Croissant (with egg, cheese and sausage) | 171 | 0.007 |
| Beef, sweetbread | 85 | 0.007 |
| Turkey | 113 | 0.006 |
| Rainbow trout | 79 | 0.006 |
| Refried beans | 135 | 0.005 |
| Onion rings | 117 | 0.005 |
| Swiss cheese | 132 | 0.004 |
| Catfish | 85 | 0.003 |
| Oyster | 85 | 0.003 |
References:
https://pubchem.ncbi.nlm.nih.gov/compound/Eicosatrienoic_acid#section=Top