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INFO FROM: http://www.intellectualloafing.com/activitiesfolder/beinformedfolder/typesofvegetarianism.htm

Vegetarian: Someone who eats fruit, vegetables, grain products (breads, cereals, pasta, and rice), nuts, etc. but no meat, fish, diary or egg products. Often this will include not consuming any products that have involved the death of an animal in their manufacture such as gelatine, animal fat and leather belts or shoes.

Lacto-vegetarian: A vegetarian who eats dairy products but not eggs.

Ovo-vegetarian: A vegetarian who eats eggs but not dairy products.

Lacto-ovo-vegetarian: A vegetarian who eats both dairy products and eggs.

Vegan: A vegetarian who not only does not use products that have involved the death of an animal but also avoids any animal byproduct such as leather, wool, silk or honey.

Pescetarian: A vegetarian that consumes fish and shellfish.

Fruitarian: A vegan who only eats products that do not kill the plant. Most fruits (e.g. apples and pears) can be picked without damaging the tree but vegetables such as potatoes are not picked as such, but eaten whole and are therefore avoided.

Flax seed has the omega 3 that fish has. Omega3 fatty acid is primarily what people eat fish for. My grandmother puts flax seed on her cereal every morning.