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
Slow goby elongated and somewhat compressed. Its large head is flattened with swollen cheeks and a large mouth. It has a pore between its eyes, and two small pores on its preopercle. Its tail fin is long and rounded without scaes or a lateral line. The slow goby inhabits rocky crevices in tide pools and under cobble in shallow water. The larvae are usually found around sargassum. It needs a temperature of 20.8-23.8 degrees Celsius (69.4-74.8 degrees Fahrenheit). Adults are benthic. Slow goby The Slow goby (Aruma histrio) is a species of goby endemic to the Gulf of California on the west