Aquarium Fish

Diamond Goby - Orange Spotted Sleeper Goby

The Diamond Goby (Valenciennea puellaris) has a few different common names. In some circles the Diamond Goby is also known as the Maiden Goby or the Orange Spotted Sleeper Goby. The Diamond Goby can get to be about 6 inches (15 cm) in total length and are considered a peaceful utility fish. They have orange dashes and dots running the length of the body with cyan colored markings on the jaws. Their heads are quite large and their jaws must be quite strong because they have to sift in the sand for their food.

On the reef the Diamond Goby is often found in pairs that are thought to be monogamous. They will create a burrow in the sand bed where they can retreat to at night or at signs of danger. It can be quite entertaining to watch these gobies do their thing. They take mouthfuls of sand and build mounds around their burrows. Some recommend that you keep them in tanks with sugar fine sand and to avoid the larger particle sands because the thought is that they can damage their mouths.

A large live sand bed is very important since these gobies rely on it for food. A benefit of their sand sifting is that they keep the sand looking very clean because they are constantly turning it over. There is a downside to this behavior though. They have no regard for your prized clams or mushrooms along the bottom of the live rock. They will form mounds or even cover smaller corals. You will have to do some "redecorating" often if you plan on keeping the diamond goby in your aquarium. It can be well worth the effort with the sparkling white sand. Ahh, that's nice.

The Diamond Goby should be able to live for several years if you can keep them well fed. This can be a little challenging at first, but it's really not hard to make sure they are getting enough to eat. Use a feeding stick or similar device to place some fish food such as mysis or brine shrimp or even fresh finely chopped shrimp from the grocery store under the sand near their burrow. They should be able to smell it and will go looking for it. Eventually they should be able to associate the feeding stick with dinner and may start to take the food directly from the stick before you can place it under the sand. Try it and see for yourself. Very cool indeed.

These orange spotted sleeper gobies have a good reputation as being very hardy and disease resistant, but don't risk your display tank with new acquisitions. Always use a quarantine tank for a few weeks at least!

Finally, if you have a functioning deep sand bed (for nitrate reduction) you will not want to keep these gobies. They will disturb deep sand beds by sifting the sand.

Diamond Goby Picture

Diamond Goby Diamond Goby Burrow
Click for larger goby photos

Diamond Goby Video

Diamond Goby Care

Scientific Name : Valenciennea puellaris

Common Names : Diamond Goby, Orange Spotted Sleeper Goby, Orange Dashed Goby, Maiden Goby

Care Level : Easy

Size : Up to 6 inches (15 cm)

Life span : 3 - 5 years, likely longer

pH : 8.1 - 8.4

Temperature : 72°F - 79°F (22°C - 26°C)

Specific Gravity : 1.020 - 1.025

Carbonate Hardness (dKH) : 8 - 12°

Origin / Habitat : Indo-Pacific, Red Sea, Samoa, Great Barrier Reef - found in the sand bottom near reefs at depths of 2 - 30 meters (6 - 100 feet).

Diamond Goby Temperament / Behavior : Usually quite peaceful but may scrap with other gobies. Fishbase states that they are found in monogamous pairs in the wild.

Breeding : They have reproduced in the home aquarium. The male/female pair will place the fertilized eggs on the top surface of their burrow. The male will guard the nest while the eggs are developing. In 3 to 4 days the larvae should hatch and become pelagic (released into the currents). It can be quite challenging to feed the larvae the very fine foods (plankton) they need to develop.

Aquarium Size : 55 gallon (208 liters) minimum, with a live sand bed. They build burrows usually near the live rock in the sand bed.

Diamond Goby Tank Mates : The Diamond Goby should do just fine with most fish tank mates and invertebrates such as snails and clams, but don't keep them with fish large enough to view them as food such as lionfish, triggers, etc.

Reef Tank Compatible? : Depends on who you ask... We consider them a good fish for a reef tank setup. If you have a deep sand bed that you don't want disturbed then pass on this fish.

Fish Disease : Saltwater Fish Disease - Diagnose, Symptoms and Treatment - generally speaking they are considered very hardy and disease resistant, but don't risk your main tank - quarantine first!

Diet / Foods : The Diamond Goby feeds on pods and other tiny invertebrates in the sand bed. They shovel or scoop sand into their mouth and then sift the sand in their mouth and then pass it through their gills. They are sifting for food and a large live sand bed is very important to maintain them long term. You can also use a feeding stick, turkey baster or similar and place food in the sand near their burrows. You can ween them onto most foods. Tiny pieces of defrosted frozen mysis and brine shrimp, clam and other meaty marine foods should be offered.

Tank Region : Often found near it's burrow in the sand bed.

Gender : To our knowledge, there is not a way to determine external differences between male and females of this fish species. Some think the females will be larger.

Forum : Gobies Forum

Author : Mike FishLore

References - Recommended Reading
- Michael, S. W. (2001). Marine Fishes, 500+ Essential to Know Aquarium Species. T.F.H. Publications.
- "Valenciennea puellaris". FishBase. Ed. Ranier Froese and Daniel Pauly. November 2005 version. N.p.: FishBase, 2005.
Forum Avatar :
Diamond Goby

Diamond Goby Tips

From: Tim
One of my all time favorite fish. I keep them in pairs in two of my reef tanks and they do a bang up job on the sand bed, keeping it constantly turned and looking great. They always have me worried when I first get them because they often make their burrow and don't come out for a couple of days. I can tell they are still alive though because you see the sand getting cleaned and mounds forming. After they get acclimated they are out and about much of the time.

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