Sphaeramia orbicularis

The orbiculate cardinalfish, chubby cardinal, or polka-dot cardinalfish (Sphaeramia orbicularis)^[1] is a species of Apogonidae (cardinalfishes). It grows to about 10 cm total length, and has a thin, dark vertical 'waistband' with scattered dark spots toward the tail. It is found in coastal areas throughout much of the Indo-Pacific, including off East Africa, Kiribati, the Ryukyu Islands, New Caledonia, Belau, and the eastern Caroline and Mariana Islands.^[1]

Sphaeramia orbicularis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Gobiiformes
Family:	Apogonidae
Genus:	Sphaeramia
Species:	S. orbicularis
Binomial name
Sphaeramia orbicularis (G. Cuvier, 1828)
Synonyms
Apogon orbicularis Cuvier, 1828 Siphamia orbicularis (Cuvier, 1828)

The male incubates the eggs until they hatch.^[1] It eats mostly planktonic crustaceans, mainly at night.^[1] It is not a common marine aquarium fish.^[2]