Yellow tang Adult fish can grow to 20 centimetres (7.9 in) in length, and 1–2 centimetres (0.39–0.79 in) in thickness. Adult males tend to be larger than females. Yellow tang are bright yellow in color. At night, the yellow coloring fades slightly, and a prominent brownish patch develops in the middle with a horizontal white band.
HERE AT ALAMEDA: we have a a beautiful salt water tank with a yellow tang. These fish are a little more nervous then their freshwater counter parts but their color and personality is remarkable.