Sphaeramia nematoptera
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Kurtiformes
Family: Apogonidae
Genus: Sphaeramia
Species:
S. nematoptera
Binomial name
Sphaeramia nematoptera
(Bleeker, 1856)
Synonyms

Apogon nematopterus Bleeker, 1856

The pajama cardinalfish, spotted cardinalfish, coral cardinalfish, or polkadot cardinalfish (Sphaeramia nematoptera) is a species of fish belonging to the family Apogonidae. It is a popular aquarium fish. It grows to a total length around 8.5 cm (3.3 in) and features distinctive red eyes and a broad, dark, vertical 'waistband' with scattered red spots toward the tail. It is considered to be of low vulnerability, and is distributed throughout much of the western Pacific Ocean, from Java to Fiji, and from the Ryukyu Islands south to the Great Barrier Reef.[1] The male pajama cardinalfish incubates the eggs in his mouth until they hatch.[1]

Pajama cardinalfish display a rainbow of colors. They have greenish-yellow faces, bright orange eyes, and silver-based bodies dressed with a bold black scalar margin and posteriors dotted with orange polka dots. Though their bold coloration may stand out, S. nematoptera fish have a peaceful nature that lets them blend perfectly into most community saltwater aquaria. Like many other schooling fish, pajama cardinalfish form a strict hierarchy when kept in small groups within the aquarium. However, unlike some social fish, this member of the family Apogonidae does not use aggression to exert dominance over other cardinalfish.[2]

References

  1. 1 2 Froese, Rainer; Pauly, Daniel (eds.) (2008). "Sphaeramia nematoptera" in FishBase. October 2008 version.
  2. ↑ "Pajama Cardinalfish: Saltwater Aquarium Fish".
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