Opal ApistogrammaOpal Apistogramma Opal Apistogramma (Apistogramma borellii) The Opal form is a captive color strain of Apistogramma borellii developed to emphasize pale iridescent pearl coloration across the body a soft, shifting blue white to opalescent sheen that gives this form its name. In good light, the opal scaling catches and refracts light beautifully. Apistogramma borellii is one of the most charming and underappreciated dwarf cichlids in the hobby. Smaller