Dorsal coloration light brown to chocolate brown, typically with diffuse dark markings on the dorsum and flanks. Trunk generally darker than the head. On the head, two opposing chevron-shaped markings frame the braincase anteriorly and posteriorly; the posterior marking often extends into a dark vertebral streak. A pale area below the eye is frequently present and may bear one or two dark spots. Body pigmentation extends onto the tail but fades markedly beyond the proximal half. Tail fins largely transparent, with sparse melanophores and occasional iridophores. Ventral surface usually transparent or slightly milky; red gills and gut visible through the skin. The heart and anterior third of the abdomen covered by a silvery layer of iridophores. A median longitudinal silver streak (along the vena abdominalis) may be present. Considerable variation occurs, including paler, darker, and less contrast-rich individuals.