They say that you can tell a lot about a person by the way they present themselves. If a guy has teardrops inked beneath his eyes and a “Satan Lives” tattoo on his neck, you might not want to meet him in a dark alley. Or, if your blind date shows up with a deep voice, hands larger than yours and an Adam’s apple to match, you might question her feminine persuasion. A few observations about the anatomy of a fish can just as accurately provide ways to approximate how they behave. There is an adage in biology that form follows function. The way something appears can tell you quite a bit about what it is good at doing.