
Illustrative images
Gobiodon okinawae
The Clown Goby, belonging to the genus Gobiodon, is a small marine fish popular among reef aquarium enthusiasts. Known for their vibrant colors and playful behavior, these fish are often found perched on coral and live rock, adding a lively element to a marine environment.
Clown Gobies are typically found in shallow coastal waters of the Indo-Pacific region, including coral reefs. They are known for their symbiotic relationship with coral, which provides them shelter and a place to forage for food.
While Clown Gobies can be relatively hardy, they do require specific conditions to thrive. Providing a stable environment with appropriate water parameters is essential for their health and well-being.
When setting up a tank for Clown Gobies, consider the following:
Clown Gobies are generally peaceful but can display territorial behavior, especially if kept in small spaces. They can be housed with a variety of reef-safe fish, but caution should be taken when introducing them to aggressive species. Ideal tankmates include:
In the wild, Clown Gobies feed primarily on small zooplankton and algae. In captivity, they can be fed a varied diet that includes:
Feeding should occur several times a day in small amounts to prevent overfeeding.
With proper care, Clown Gobies can live for several years in captivity, typically around 5-7 years.
Prepare a well-established aquarium with plenty of live rock, caves, and crevices to provide hiding spots for the Clown Goby.
Introduce the Clown Goby to the aquarium gradually to minimize stress and ensure a smooth transition.
Keep the water temperature between 22.2-25.6°C (72-78°F), pH at 8.1-8.4, specific gravity between 1.020-1.025, and carbonate hardness (KH) at 8-12 dKH.
Feed the Clown Goby a varied diet rich in meaty foods, such as small crustaceans like krill, mysis, and artemia, as well as zooplankton like Cyclops and copepods.
Ensure that tank mates are peaceful, as Clown Gobies can be territorial towards others of their own kind and may be outcompeted for food by more aggressive species.
Gobiodon okinawae, commonly known as the Clown Goby, reaches a maximum size of approximately 3.0 cm (1.18 inches).
Clown Gobies thrive in water with a temperature of 22.2-25.6°C (72-78°F), a pH of 8.1-8.4, a specific gravity of 1.020-1.025, and a carbonate hardness (KH) of 8-12 dKH.
Clown Gobies are generally considered reef-safe with caution. They may nip at corals, especially Acropora species, as they feed on coral mucus and tissue along with benthic invertebrates and copepods.
A minimum tank size of 50 liters (13.21 US gallons) is recommended for Clown Gobies, providing ample space for their activity and well-being.
Gobiodon okinawae is native to the Western Pacific, ranging from southern Japan to the Rowley Shoals and the southern Great Barrier Reef, including Palau and the Marshall Islands in Micronesia.