Here are some more links to benefits of following diet without hurting animals, fish.
Life in its infinite forms exists as one organic unity. We are part of it: the part should feel reverence for the whole. That is the idea of vegetarianism. It simply means: don’t destroy life. It simply means: life is God — avoid destroying it, otherwise you will be destroying the very ecology.
Killing life is destroying your own possibility of growth. You have to respect life; a reverence for life will help your growth of consciousness. Vegetarianism functions as a purification. When you eat animals, you are heavy, you gravitate more towards the earth. When you are a vegetarian, you are light and you are more under the law of grace, under the law of power, and you start gravitating towards the sky.
Your food is not just food — it is you. What you eat, you become. The lighter the food, the deeper goes the meditation. The grosser the food, the more difficult meditation becomes. Food is not just energy, it is also a qualitative thing. Food is not just a fuel, it contributes more than fuel — it gives you either transparency or non-transparency.
The insight into this phenomenon can mutate, and you can have altogether a different type of body. And it is not so difficult to change this body, it is changing itself every moment; it is a process, it is not a static thing. The moment you came here, you had another body; now the body has changed; it is river-like, moving and changing. Whatever you are putting in the body, the body will reflect.
November 25 is observed as Meatless Day