The Green Clown Goby (Gobiodon atrangulatus), sometimes called the Green Warpaint Clown Goby, is a gorgeous green and red saltwater fish. Similar to other species of clown goby, this one does not sift through sand but instead spends its day perched on rocks and corals waiting for food to come its way. A full grown Green Clown Goby will be about 1.75 inches, which makes them an excellent choice for a nano aquarium. This Clown Goby care guide will discuss aquarium requirements, dietary needs, tank mates, breeding, and more about the Green Clown Goby.
Aquarium Requirements
As stated earlier, this species of fish only grows to about 1.75″ when fully grown. They can be kept in saltwater fish tanks that are 10 gallons or larger. Green Clown Gobies love to perch on rocks and corals, so their aquarium should have plenty of live rock of varying sizes for them to rest on. If you can’t find any at your local fish store, consider taking a look at the Live Rock on Amazon. They will also use this rock as cover when startled or stressed. Besides live rock, I would also recommend a lid for your aquarium to prevent this fish from jumping out.
Water Parameters
The Green Warpaint Goby has similar water parameter requirements to most saltwater fish in this hobby. It is important to keep these water parameters stable and within range to keep your fish, invertebrates, and coral happy. The following parameters are what this species of fish thrive in.
- 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 Green Clown Goby Reef Safe?
The Green Clown Goby is generally reef safe. I say generally because they can cause damage to SPS coral, especially Acropora when they are breeding. In the wild, they lay their eggs on the underside of SPS coral. This will cause the coral tissue to recede. They will likely do the same to your SPS coral in the aquarium. Otherwise, they should not bother any soft coral, zoanthids, or invertebrates.
Food & Diet
This species of fish requires a protein-heavy diet because it is carnivorous. It is up to you whether you feed these fish frozen foods or freeze-dried foods but I recommend providing them with Brine Shrimp, Mysis Shrimp, and many other types of meaty foods. They should easily accept other types of food like flake food and pellet food. I recommend feeding them New Life Spectrum All Purpose Flake Food and New Life Spectrum Marine Formula Pellet Food. Your Clown Goby and most other saltwater fish will benefit from these foods.
Tank Mates
Green Clown Gobies are very peaceful fish and should not bother anyone else in the aquarium. I recommend keeping them with many different types of fish such as Dwarf Angels, Tangs, Foxfaces, Clownfish, Rabbitfish, Basslets, Blennies, Chromis, and much more. You have to be careful with fish that use the same space of the aquarium, like Blennies, Basslets, and other rock-dwelling fish. It shouldn’t be a problem in a large enough fish tank.
They may become territorial with other Clown Gobies in smaller aquariums, but pairs can be kept together if you’re fine with them possibly breeding in the aquarium. I would not keep odd numbers of this fish species because there will likely be a lot of fighting between the three. In a 40 gallon aquarium, you could likely get away with keeping up to 4 individuals.
Breeding
Clown Gobies will likely breed in your saltwater fish tank if you keep a pair. I have not personally bred them, but there is a great forum post on Marine Breeding Initiative that discusses the process of successfully breeding your Clown Goby from egg to adulthood.
Final Notes
The Warpaint Goby is a fantastic and uniquely colored fish to add to a saltwater aquarium. They have a very docile nature and can sit on rocks and corals for minutes to hours. It’s very entertaining to observe them move about their day. It’s also not very common to see a green fish like this. However, if this fish isn’t for you, consider taking a look at many other saltwater fish available in this hobby.
Image by Dr. Oliver Schneider on wikiMedia
