It's Called Seafood, Not Meat

This is more of a general claim for people that don't necessarily have a strong opinion for any other reason other than they consider meat to be from land dwelling animals.  The basic thought process behind this ideology is: Does it live on land? If yes, then it is meat, if not then it is seafood.

This ideology generally neglects many important aspects of classification such as what the meat is actually composed of.  Many people of this ideology would also generally agree that both seafood and red meat would fall under the large umbrella category of "Meat," which somewhat contradicts the claim that it is different from meat.  As illustrated below:

This argument is not often used, especially when in a debate about whether fish is meat or not.  It is a more relaxed method of classification where no serious thought was put into it, but seafood and meat have just been considered to be separate.  This why people of this ideology will generally agree that seafood is a subclass of "meat."  Another contributor to this ideology is that most chain grocery stores will often separate "Meats" and seafood into their own respective sections of the store.