Trimma okinawae
Source: A.T. Cooper/Reef Life Survey / CC BY 3.0

Facts

Latin name Trimma okinawae - (Aoyagi, 1949)
Common name Okinawa rubble goby
Family Gobiidae - Trimma
Origin East Indian Ocean, Australia, Japan, Indonesia, East Pacific, Central/West Pacific
Max length 3.5 cm (1.4")

As aquarium fish

Minimum volume 10 l (3 gal)
Hardiness Average
Suitable for aquarium Suitable with care
Reef safe Always reef safe
Aggressiveness Docile

Food

Recommended
  • Zooplankton (Cyclops, pods...)
  • Small crustaceans (Krill, mysis, artemia...)

Secure overflows

This species may get lost in overflows because of its small size.

Short lifespan

This species has a short natural lifespan.
It is hard to say what to expect, but the lifespan is two years at most and typically much shorter.

Sensitive during transportation

This species is very sensitive during transportation and acclimatizing into the aquarium.

Well established aquarium with pods

This species thrives best when there is a sufficiently large amount of micro life (copepods, amphipods or similar) in the aquarium, so that the it can always find their own food.

Docile

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

Hermaphrodite

This species can change gender from male to female and vice versa.

Hiding places

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

Singly or in a group

This fish can live on their own or in a group.

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 Unknown
Distribution Western Pacific: Ryukyu and Ogasawara Islands to Rotuma, south to Rowley Shoals in the eastern Indian Ocean and the Great Barrier Reef. Recently recorded from Tonga (Ref. 53797).
English common names Yellow-speckled cave-goby, Red-spotted dwarfgoby, Orange-red pygmygoby, Okinawa pygmy-goby, Orange-red goby, Orange spot goby, Orange-red pygmy goby, Okinawa rubble 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)

Froese, R. and D. Pauly. Editors. 2014. FishBase. World Wide Web electronic publication. www.fishbase.org, version (08/2014).

Tags

docile shy, hermaphroditic, pods, shoal group
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