We normally know the protein rich sources that fall under non-vegetarian category, it is not necessary that we always refer to non-veg foods for protein sources. Proteins are the amino acids and facts say that there are almost twenty different amino acids that form proteins among which nine are of type that a human body cannot produce which makes it essential to take manually. In order to complete the protein requirements these nine essential proteins are to be taken equally. Yes, eggs and meat are good examples of protein rich sources, but we can’t always take non-veg food to fulfill our daily protein requirement.
When it comes to taking healthy protein diets, fish is not the only contender. Apart from non-veg food there are any other protein sources that can easily fulfill your protein requirement.
Studies show that beans are normally low in methionine type of amino acids;soy is known as complete protein and can be used as the substitute to meats for protein source. Some of the soy products are made by fermenting the soy and on higher concentrations they exhibit a great protein content diet.
Although the facts say that Spirulina is not a complete protein diet as it lacks cysteine and methionine but in order to fill the gaps you can always add the food articles that are rich in these types of amino acids such as grain, oats etc.
It is always easy to refer some of the best sources which can tell you about more food articles that make your diet protein rich and you can always get their reference.