The pilotfish color is exemplary striking. It’s recognizable by its five to seven dark bands across in its anatomy, a sharp, contrasting distinction from its silver-blue body. The pilotfish is studied to have variation of color when it is excited, though this happens as a temporary occurrence, where its dark bands disappear and the body transitions to a silver-white color.
Pilotfish may have a similar appearance to the mackerel, but they have a more rounded nose and smaller mouth. This type of fish has a long and slender body, about four times the length as its deep and have characteristically forked tail. And with their lengthy second dorsal fin, this distinguishes them from the rest more.
The first of the dorsal fins, connected by a membrane, consists of three to four short spines that recede as they grow. The second dorsal, whereas, is concave in shape and begins midway down their backs. The anal fin mirrors about the same of the second fin, but only half of its length, lead up to two short spines.
There is a lateral ridge on both sides of the tail base which provides stability and support to the tail fin. And a rounded gill cover can be found in adult pilotfish but for juvenile pilotfish, they’d have a spine.
The pilot fish come together around large species such as sharks, rays, and sea turtles, where they consume the ectoparasites, and leftovers are on and/or around their host species. The younger counterparts of the pilot fish associate themselves with jellyfish and drifting seaweeds.
The pilotfish can lengthen up to 23 to 28 inches.