Color of body dark blue to chocolate brown, shading to silvery white underbelly; noticeable spots on dorsal fin; upper jaw elongated in shape of spear; body covered with embedded scales with a single sharp point; tips of first dorsal, pectoral, and first anal fins rounded; lateral line curved above pectoral fin, then going in straight line to base of tail. White marlin are large, elongated fish with a large upper jaw that forms a spear which is round in cross-section. Although generally considered to be a rare and solitary species relative to other similar fish, white marlin occur in small groups consisting of several individuals. Dorsal spines (total): 0; Dorsal soft rays (total): 43-52; Anal spines: 0; Anal soft rays: 17 - 23. Blue-black above, silvery white and splattered with brown on the sides, silvery white below; sometimes with more than 15 rows of obscure whitish stripes; 1st dorsal fin dark blue with black dots; 2nd dorsal fin dark blue; pectorals blackish brown, with tinges of silvery white in some specimens; pelvic fins blue-black with a black fin membrane; caudal fin blackish brown.