The swim bladder is very elongate with a single slender tapering posterior extension and two anterolateral extensions. No duct-like urogenital aperture is present. Body color is pale brown, gray brown, or dark olive green above, and whitish pale brown or silvery below with reflections of mauve, blue green when fresh. The back and upper sides with oblique rows of small round dark brown to rusty brown spots; the lower sides with open-spaced rather scattered round dark spots. The belly is white and without spots. The dorsal fins are uniformly dark greenish brown to light brown sometimes spotted with dark brown; the anal, pectoral and pelvic fins are pale brown to hyaline; the caudal fin is greenish to brownish and finely dusted with brown (Ref. 6205).