I had to look it up, because one of my nephews adopted a vegan diet a couple of years ago,(11 yrs old) but he eats bread, but won't eat fish. Matter of fact, we had this whole discussion about why I do not consider fish meat after he cried after we went to a huge produce market in ATL. He felt they mishandled the crabs. (We didn't know they sold fish too)
He's not local to me, so he is not here enough eating at my home that I did any research on it, so I looked and was surprised to see all the definitions vegans have for their choices and was surprised to see some "vegans" ate fish.
http://vegetarian.about.com/od/vegetarianvegan101/tp/TypesofVeg.htm
If they eat fish, they are not Vegans. Vegans do not eat animals or animal bi-products.
Since I cannot remember some of the types of vegetarians, I looked them up. Here are a few differences in the types of vegetarians:
[FONT=Arial, Helvetica, sans-serif]Lacto Ovo Vegetarian [/FONT]
A lacto ovo vegetarian does not eat meat, fish or poultry, but eats eggs and milk. They eat eggs and products made with eggs in them, yogurt, cheese, milk and ice creams.
[FONT=Arial, Helvetica, sans-serif]Lacto Vegetarian[/FONT]
A lacto vegetarian does not eat meat, fish, poultry or eggs, but includes dairy products in their diet. They will eat milk, ice cream (that does not include eggs), yogurt and cheese. They would avoid ice creams, baked goods, pancakes and veggie burgers that contain eggs.
[FONT=Arial, Helvetica, sans-serif]Vegan[/FONT]
A vegan does not eat any fish, meat, poultry, eggs, dairy products or foods that contain any of these products. They also do not use any non-food items that contain products from animals, including wool from sheep, leather and silk. Vegans often do not eat honey, because bees may be killed while harvesting it.
According to many vegans, it is pronounced VEE-gun. A vegan diet consists of vegetables, grains, beans, nuts, fruits and seeds. This diet tends to be high in fiber and moderate in protein and fat.
A vegan will not use margarine that has casein, a milk product, in it and they do not use shoes that are made from leather. Vegans do not eat white granulated sugar because it is often processed by using char derived from animal bones to whiten the sugar. They also do not use products that are tested on animals, as are many cosmetics.
[FONT=Arial, Helvetica, sans-serif]Macrobiotics[/FONT]
A macrobiotic diet is mainly vegetarian, but macrobiotic diets often include seafood. In this diet all other meat products are excluded, as are eggs and dairy products. They also do not eat "nightshade vegetables" (potato, pepper and eggplant), refined sugar and tropical fruits. This diet contains many foods found in Asian countries such as miso soup, root vegetables (daikon and lotus) and sea vegetables (seaweed, kelp, arame).
It emphasizes eating locally grown foods that are in season. Meals consist of 50% to 60% grains, 25% locally grown produce, and the rest of the diet mainly consists of beans and soups. In lesser amounts fruits, nuts and seeds are eaten.
This diet is based on the Chinese principles of yin and yang. Some people follow this diet as a philosophy of life and others follow it for health reasons.
[FONT=Arial, Helvetica, sans-serif]Fruitarian[/FONT]
A fruitarian is a person who only eats fruits and vegetables that are actually classified as fruits such as avocados, nuts, seeds, eggplant, zucchini and tomatoes.
[FONT=Arial, Helvetica, sans-serif]Raw or Living Food Diet[/FONT]
One who follows a raw food diet is a person who for the most part only eats raw foods that are not cooked. One who follows this type of diet believes that cooking changes food in a negative way and makes it less nutritious, diminishing the vitamin and mineral contents of the food. Most people who follow a raw-food diet only eat between 50% to 80% of their food raw. There is some logic to a raw food diet in the fact that cooking food destroys nutrients. But cooking food on the other hand makes foods easier to digest, which often offsets the anti-nutritional factors.