Ostorhinchus apogonoides

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Facts
Latin name Ostorhinchus apogonoides - (Bleeker, 1856)
Local name Short-tooth cardinal
Family Apogonidae - Ostorhinchus
Origin East Indian Ocean, West Indian Ocean, Australia, Japan, The Red Sea, Indonesia, Central/West Pacific
Max length 10 cm (3,9")
As aquarium fish
Minimum volume 100 cm (26 gal)
Hardiness Hardy
Suitable for aquarium Suitable for most aquarium
Reef safe Reef safe with caution
Aggressiveness Docile but might be aggressive towards similar species
Feed
Recommended Small crustaceans (Krill, mysis, artemia...)
Mostly Larger crustaceans (Shrimp, crabs...)
Beware of
Can be a threat to smaller fish and shrimps

This species may eat small fish and especially small shrimps, there are, however, some aquarists who manage to get them to coexist just fine.

Keep in mind
Thrive best on their own

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

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 (Apogonidae)

Cardinalfish come in many different shapes and colours, generally they are well suited for aquaria.

Cardinalfish have a large mouth and a big appetite, take this into account with feeding  the other fish. These fish typically live off of Artemia, Mysis and krill. In the aquarium they will eat anything they can.

They will sometimes eat small shrimps and fish, so do be aware of this, but it is not normally a problem.

It is possible to keep several species together, if space allows. Some species will form  small shoals. They are normally peaceful towards other fish, but will sometimes fight among themselves if there isn't sufficient space or food.

Many species are nocturnal and will therefore often seek a hiding place during the day. This can be between stones, SPS corals and, in some cases, in an anemone and between spines of Sea urchins.

Cardinalfish are a good choice if ones wishes to attempt to start a breeding tank.

FishBase
Aquarium trade No
Distribution Indo-West Pacific: East Africa to the Philippines (Ref. 559), north to Miyakejima, Japan (Ref. 559) and Taiwan (Ref. 9147), south to northern Australia (Ref. 2334) and Society Islands (Ref. 76833).
English common names Short-toothed cardinalfish
Goldbelly cardinalfish
French common names Apogon à ventre doré
Cardinal masqué
Poisson cardinal
References and further reading

About references

Scott W. Michael. 2001. Basslets, Dottybacks & Hawkfishes: v. 2 (Reef Fishes) - TFH Publications / Microcosm Ltd. - (English)
Bob Fenner. Cardinalfishes, Family Apogonidae, Pt. 1Pt. 2 - Wet Web Media - (English)