noun;
1) person who follows a vegetarian diet with the exception of fish and all other sea foods.

When you eat dirt for the first time and leave your family to build a shack in the woods

Vegetarians who eat fish, not because they believe they have no feelings and have a short memory, but for health reasons, as they have nutrients that can't be found in just vegetables.
Some people also think it's spelled pesKitarian, but it's not.

Omnivore who has a preference to seafoods, is not a vegetarian in any shape or form.
Omnivore = eats plant & animal

vegetarian = won't eat animals based on them being conscious & feel pain

Pescetarian = eats plant & animal, more specifically fish

Usually done for health reasons over ethical, vegetarians dislike the title pescetarian as they often refer to themselves as vegetarians to save hassle of explaining what a pescetarian is. Thus vegetarians are associated as eating fish & this is seen on menus as vegetarian options

A person that eats no land animals of animals that fly.

Similar to a vegetarian, with the exception that they eat seafood.

This mostly occurs because of medical reasons, wether mineral loss or other.