The Citron Goby, sometimes called the Citrinis Clown Goby, or Citrin Goby, is a beautiful yellow and blue saltwater fish. They’re small fish that will only grow to about 2 inches. They are generally very peaceful and should not bother other fish in the aquarium, but they may fight amongst themselves. Citrin Gobies will often sit motionless on rocks, glass, and sand beds for minutes to hours. This article will go deeper into this Clown Goby’s aquarium requirements, dietary needs, tank mates, and more.
Aquarium Requirements
Due to their small size, a Citrin Goby can be kept in a 10-gallon aquarium, but I would recommend at least a 20-gallon aquarium. Unlike many species of goby, this one does not sift sand but instead hangs out on rockwork, coral, glass, and other hard surfaces. A lot of live rock of varying sizes is recommended for keeping these fish. Sometimes it is hard to find at your local fish store, so consider checking some out Live Rock on Amazon. I also recommend purchasing a well-fitted lid for your aquarium because Clown Gobies can jump out.
Water Paramaters
Most animals kept in captivity, do best when you mimic their natural habitat in their enclosure. The same stands for the Clown Goby. Providing them with proper water parameters will help them live a long and happy life. Their water parameters are similar to most saltwater fish, which are listed below.
- Water Temperature: 72°-78° F
- dKH: 8 – 12
- pH: 8.1 – 8.4
- Salinity: 1.020 – 1.025 sg
Consider getting a High Range pH and KH test kit to test for pH & dKH. Keeping your temperature between 72° and 78° can be accomplished with a heater. Take a look at my guide which showcases some great aquarium heaters. Lastly, I would pick up a Refractometer from Amazon to keep an eye on your salinity levels. If calibrated correctly, refractometers are much more accurate compared to a hydrometer which loses accuracy due to salt buildup on the dial. Check out Different Salinity Reading Tools For Saltwater Fish Tanks to get an idea of other salinity testing devices available.
Is The Citrin Goby Reef Safe?
For the most part, the Citrin Goby is reef safe. However, stony coral can be in danger of this fish when it is breeding. This goby species lay its eggs on the underside of branches of SPS coral. This can cause the tissue of the SPS coral to recede. Their favorite to do this with is Acropora, but many species of stony coral are not safe. They should be fine with soft coral and most invertebrates.
Food & Diet
This species of fish is carnivorous. Their diet should match what they consume in the wild. It is best to feed Citrin Gobies Brine Shrimp, Mysis Shrimp, and other types of protein-rich foods. My personal preference is thawed frozen fish food, but freeze-dried food can work as well. Also, I recommend providing Clown Gobies with high-quality flake food such as the New Life Spectrum All Purpose Flakes, and protein-rich pellet food like the New Life Spectrum Marine Formula, to provide a variety and cover more nutritional bases.
Tank Mates
The Citrin Goby will do well with most friendly saltwater fish species. I would recommend them with Dwarf Angels, Tangs, Foxfaces, Clownfish, Rabbitfish, Basslets, Blennies, Chromis, and much more. I would be weary of keeping them with large fish, and fish with large mouths, like Anglers, Groupers, Eels, and others. They can make lunch out of this fish very easily. Also, Citrin Gobies are often peaceful, but other fish may be territorial around rockwork. Be aware that they may get picked on when entering other fish’s territory.
In appropriately sized aquariums (minimum 40 gallons), small groups of Clown Gobies can be kept together. If you’re keeping the same species, I would recommend 2 or 4 individuals so they can pair off. I do not recommend odd numbers because one of the groups will likely get bullied, stressed, and even killed. Keep in mind that if you keep more than one in your aquarium, there’s a chance that they will breed and wreak havoc on your SPS coral.
Breeding
If you have a breeding pair of Clown Gobies in your aquarium, they may spawn on their own without any human intervention. However, getting the eggs to successfully hatch and grow into adulthood will be the bigger challenge. Especially when many other opportunistic fish are waiting to eat the eggs. I do not personally have experience breeding this species, but here is a forum post on Marine Breeding Initiative that archives the process someone took to get eggs to hatch.
Final Notes
Citrinis Clown Gobies are unique-looking fish with an interesting personality. It’s incredibly fun watching them perch on rocks and corals waiting for food to come their way. Their leisurely and peaceful personalities make them excellent candidates for community saltwater fish tanks. However, be cautious because they may mess with your Acroporas and other SPS corals. If you’re not sold on the Citrinis Clown Goby, check out other species of saltwater fish for your aquarium.