An informal outline usually organizes information with bullet points. In typography, a bullet point (•) is a typographic marker or glyph used to organize items in a list.
The bullet point can take a variety of shapes, such as a circle (ᴏ), a square (□), a diamond (◊), or an arrow (→). The typical word processor software offers a wide selection of shapes and colors. Several regular symbols, such as an asterisk (*), hyphen (-), period (.) And even lower case letters (the lowercase letter O) are conventionally used in ASCII (text only) or other environments where list point characters are not available. When writing by hand, bullet points can be drawn in any style.
You did not provide an article that I can follow to get the answer, but my estimated guess would be because they put pink dyes in the salmon to make it more appealing to eat.
