Fin's Fish Guide
The Sponge cardinalfish (Phaeoptyx xenus) is a saltwater fish of the family Apogonidae that grows up to 8 cm.
Description
The sponge cardinalfish is a small reef fish of the cardinalfish family (Apogonidae) from the western Atlantic and Caribbean. The species grows to about 7.5 cm and has a translucent, reddish body with fine dark dots along the scale edges and large eyes. It inhabits coral reefs and rocky bottoms and often shelters in the cavities of tube sponges, to which the name refers. As a nocturnal hunter it feeds on small zooplankton and small invertebrates. Like other cardinalfishes the male broods the eggs in its mouth. The species is harmless to humans.
Frequently asked questions
How do you recognise the Sponge cardinalfish?
The Sponge cardinalfish has a torpedo-shaped body, is mainly red-orange and shows a spots pattern. Translucent with fine speckles; often shelters in the cavities of tube-shaped sponges.
Where does the Sponge cardinalfish live?
The Sponge cardinalfish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Western Atlantic and Caribbean; coral reefs, often in tube sponges.
How big does the Sponge cardinalfish get?
The Sponge cardinalfish grows to a maximum of about 8 cm.
Is the Sponge cardinalfish dangerous to humans?
No, the Sponge cardinalfish is harmless to humans. None required: this species is harmless to humans.
Is the Sponge cardinalfish edible?
The Sponge cardinalfish is not usually eaten.
Want the complete picture on the Sponge cardinalfish?
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Phaeoptyx
More from the family Apogonidae
Want the complete picture on the Sponge cardinalfish?
Point your camera at the fish and Fin names the species in seconds. Free, and the Sponge cardinalfish is one of 12,519 species in the app.