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
Pinchuk's goby Pinchuk's goby Pinchuk's goby ("Ponticola cephalargoides") is a species of goby native to the Black Sea and the Sea of Azov. The body of adults is prolonged, not very high. Only juveniles have high and short body. Сaudal peduncle is very high (highest between al representatives of genus "Ponticola"), short and flattened from sides (its high is equal its length). The scales on the caudal peduncle are not very big. Head is flattened from sides, snout profile is round, cheeks are round. Superior lip is broad, relatively short. Premaxilla short (especially in juveniles), with sparse strong lips. First dorsal fin