Chromis half half(Chromis dimidiata)
The Half-and-half chromis is a striking bicolored fish where the front two-thirds of its body is dark brown to black, and the rear third is pearly white. It reaches a maximum length of about 7 cm, though some dominant males can reach 9 cm. Other names for this species include the Chocolate-dip Chromis or Bicolor Damselfish.