Rainbow Goby (Stiphodon ornatus)
The Rainbow Goby, also known as Onate Goby, is a small, vibrant freshwater fish known for its striking colors and peaceful demeanor. These gobies exhibit a beautiful blend of blue, green, and yellow hues, with males typically displaying more intense coloration than females. They grow to around 2-3 inches in length and are known for their inquisitive nature and unique swimming style.
They can be kept in small groups, with a recommended minimum group size of 4-6 individuals. They are not schooling fish, but they do enjoy the company of their own kind. Rainbow Gobies are peaceful fish that do well in community tanks with other small, non-aggressive species. Choose peaceful, small, and non-aggressive tank mates that share similar water requirements. Suitable companions include small tetras, rasboras, and peaceful bottom dwellers like Corydoras catfish and small loaches.
In the wild, Rainbow Gobies primarily feed on biofilm, specific algae types, including diatoms, cyanobacteria (commonly known as blue-green "algae"), green algae, and microorganisms. In captivity, their diet should consist of high-quality algae wafers, blue-green algae, and spirulina flakes. Live or frozen foods, such as daphnia and brine shrimp, may be accepted but should only be offered irregularly since the elongated gut is specifically designed to process vegetable matter.
Rainbow Gobies thrive in a well-planted aquarium with a sandy substrate, smooth rocks, and aged driftwood to create hiding spots and resting areas. These structures also provide surfaces for algae growth, which the gobies will graze on. Sandy substrate allows gobies to sift through it in search of food. This natural foraging behavior is important for their well-being and can help reduce stress.
Go for live aquatic plants that can tolerate their preferred water parameters, such as Java fern, Anubias, and Cryptocoryne species. Anubias species are an ideal plant choice to accompany this goby, as they can promote substantial biofilm and algae growth in an aquarium with moderate to high lighting. Ample territory and hiding places with indirect sight lines are recommended for multiple males.
These gobies are native to streams and rivers, so they appreciate moderate water flow that is well-oxygenated. You can achieve this by adjusting the output of your filter or adding a small powerhead to create gentle currents.
A minimum tank size of 20 gallons is recommended, or 40+ gallons in a community tank setting.
Rainbow Goby prefer requires stable water conditions with a pH of 6.5-7.5, a hardness of 5-15 dGH, and a temperature range of 72-79°F (22-26°C).
To learn more about this fish, be sure to check out the Additional Information tab.
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