Ostorhinchus sealei

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Facts
Latin name Ostorhinchus sealei - (Fowler, 1918)
Local name Seale's cardinalfish
Family Apogonidae - Ostorhinchus
Origin Australia, Indonesia, Central/West Pacific
Max length 10 cm (3,9")
As aquarium fish
Minimum volume 100 cm (26 gal)
Hardiness Average
Suitable for aquarium Suitable for most aquarium
Reef safe Always reef safe
Aggressiveness Docile
Feed
Recommended Zooplankton (Cyclops, pods...)
Small crustaceans (Krill, mysis, artemia...)
Maybee Larger crustaceans (Shrimp, crabs...)
Beware of
Can be a threat towards small crustaceans

This species can be a threat towards small crustaceans, e.g. small shrimp.

Keep in mind
As a pair or in a small group

This species thrives best as a pair or in a small group.

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.

Formerly classified as Apogon

Species are sometimes reclassified. This species was formerly classified as a member of the Apogon genus.

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
Distribution Indo-Pacific: Malaysia to the Solomon Islands, north to southern Japan, south to northwestern Australia; Palau in Micronesia.
English common names Seale's cardinalfish
Cheek-bar cardinalfish
Cheekbar cardinalfish
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)