Definitions for "Total length"
The greatest length from the tip of the nose (with the mouth closed) to the tip end of the tail (with the tail lobes pressed together).
The greatest length measured from the tip of the head (mouth closed) to the extremity of the caudal fin (with the caudal rays squeezed together). Upper jaw length: Measured from the most anterior point of the premaxilla to the most posterior point of the maxilla.
the distance from the anterior tip of the snout to the posterior edge of the tail. In species with a tail extension (such as swordtails) total length is measured without the tail extension, with the tail extension measurement given as well.