Gnatholepis thompsoni

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Facts
Latin name Gnatholepis thompsoni - Jordan, 1904
Local name Goldspot goby
Family Gobiidae - Gnatholepis
Origin West Indian Ocean, The Mexican Golf, West Atlantic, Mediterranean Sea
Max length 8 cm (3.1")
As aquarium fish
Minimum volume 150 l (40 gal)
Hardiness Average
Suitable for aquarium Suitable with care
Reef safe Always reef safe
Aggressiveness Mostly peaceful but might be aggressive towards similar species
Feed
Recommended Detritus
Small crustaceans (Krill, mysis, artemia...)
Zooplankton (Cyclops, pods...)
Keep in mind
Thrive best on their own

These fish flourish better without other members of the same species in the aquarium.

Filters sand

This species assist in keeping the sandy substrate clean by filtering sand in search for food.
Compared to other sand dwelling gobies this one is not as proficient at filtering the sand.

Frequent feeding

This fish requires feeding several times a day, especially when newly added.

When the fish can find its natural food in the aquarium it requires less frequent feeding. 

Hiding places

This species needs good hiding places, for example, between live rocks.

Docile

This species is very shy and docile, so one should be careful when keeping it with more aggressive fish.

Descriptions and further reading
Family description (Gobiidae)

Gobies (Gobiidae) are generally small fish, which live close to the bottom. Many of the species are fairly hardy and well suited to aquaria. The behaviour of the different kinds of Gobies varies greatly and some can be very interesting.

The most common types of Gobies in aquaria are the following:

Sand eating Gobies (Amblygobius, Koumansetta and Valenciennea)
Sand eaters filter the sand through their mouths and out of their gills.

They are generally bigger than other Gobies, but they are usually peaceful, so size is not a problem.. They can however be aggressive towards their own species.

One must be aware that they can eradicate the micro life in the substrate when the tank is too small. If there is not enough live food in the sand, it can be difficult to ensure the fish stay in good condition, as they require frequent feeding.

They may spread sand across the corals when they eat.

Shrimp Gobies (Amblyeleotris, Cryptocentrus and Stonogbiops)
Shrimp Gobies have a symbiotic relationship with Pistol shrimps, but one must first find out which species can live together.

The shrimp and Goby live together in a small hole in the sand or under a stone where the shrimp maintains the hole, so it will not collapse over time. The Goby helps by looking out for enemies, since the shrimp does not see well in sunlight, as it will have become accustomed its vision to the darkness of the hole.

Neon Gobies (Elacatinus/Gobiosoma)
Thesef Gobies are very small and like the Cleaner Wrasse, it eats parasites off other fish.

These Gobies are easier to keep alive in the aquarium than Cleaner Wrasses, as they can eat a wide range of foods.

Clown Gobies (Gobiodon)
These fish are very small and therefore suitable for small aquariums. Clown Gobies will often hide inbetween the branches of stony corals, like Acropora for example.

They generally eat many types of food, as long as it is small enough.

FishBase
Aquarium trade Yes
Distribution Atlantic: southern Florida, North Carolina, the Bahamas, Bermuda through to the Lesser Antilles in western Atlantic; also in the oceanic islands of Ascension, Madeira and St Helena, and Sao Tome Island, Cape Verde Islands and the Canary Islands in the eas
English common names White goby
Goldspot goby
References and further reading

About references

Scott W. Michael. Reef Aquarium Fishes: 500+ Essential-to-know Species - TFH Publications / Microcosm Ltd. - (English)

James W. Fatherree. 2011. Aquarium Fish: A Look at the Gobies - Advanced Aquarist - (English)
Bob Fenner. "True" or Combtooth Gobies, the Family Gobiidae - Wet Web Media - (English)