Goby Lake that the diversity of species in the lake is greatly reduced from the nearby lagoon. The golden jellyfish "Mastigias" cf. "papua nakamurai" and possibly other species in the lake have evolved to be substantially different from their close relatives living in the nearby lagoons. The lake is rich with several species of fish, including goby, giving to lake its name. The deepest - north-eastern - part of Goby Lake is stratified into two layers, an oxygenated upper layer (mixolimnion) and a lower anoxic layer (monimolimnion). The oxygen concentration in the lake declines from about 6 mg/l at the surface to
Pelagic goby Pelagic goby The pelagic goby (Sufflogobius bibarbatus), also known as the bearded goby , is a species of true goby from the family Gobiidae, native to the southeastern Atlantic Ocean. It is currently the only known member of its genus. It reaches a maximum length of . It has 7 dorsal spines and 12-13 dorsal soft rays. It has a single anal spine and 12-13 anal soft rays. Its fins are dusky to black in color. This goby is demersal, inhabiting depths of in subtropical waters ranging from in the coastal waters of Namibia and South Africa. The bearded goby