Cobalt Blue Goby

The Cobalt Blue Goby, which comes from Southeast Asia, is a species of goby that grows to around 5-6 cm long and can be found in nature in fast-flowing, clear waters. It is mainly found in Indonesia, where it is widespread. Thanks to its slim body shape and the ventral fin that has been converted into a suction disc, it is ideally adapted to this habitat. The basic color of this goby is silvery-gray to brownish. It has a horizontal band from the tip of the nose to the base of the caudal fin, which in males is colored neon blue.

Care in the aquarium

Stiphodon semoni requires a tank with an edge length of at least 60 cm. This slightly more demanding goby prefers aquariums with good current or areas with a lot of current and oxygen-rich, clean water. It also feels comfortable in the company of its peers and should be kept in a harem or in a group of 5 or more animals. They are generally very peaceful within the species and towards other fish, but during the mating season there can occasionally be arguments between the territorial males, which is why the tank should be well structured and offer enough opportunities to retreat. Socialization with other flow-loving, similarly sized and peaceful animals is usually possible without any problems.

Feeding

The Cobalt Blue Goby mainly eats algae growth and biofilm, which is why the aquarium should already be well set up. It also happily accepts suitable flake or granular food as well as live and frozen food.

Sexual characteristics and breeding

The slightly slimmer male Cobalt Blue Gobies have a neon blue longitudinal stripe along the middle of their body, while this is colored black in the females, which are also slightly fuller. Breeding in freshwater aquariums is not possible because the fish larvae need brackish water to develop.