Weedy Cardinalfish

Foa fo, a species within the genus Foa, is commonly referred to as the 🇼🇸 Samoan Cardinalfish, Weedy Cardinalfish, or 🇼🇸 Samoan Fo. This tropical marine species is associated with coral reef habitats and is typically found at depths ranging from 1 to 82 meters, with a usual range of 1 to 15 meters (Ref. 90102). The species attains a maximum length of 3.5 centimeters.

Foa fo is a nocturnal fish that predominantly inhabits inshore environments. It is known to frequent estuaries and tranquil coastal bays, favoring mud or silty substrates with algae-covered rock outcrops or isolated soft corals. Individuals may be found solitary or in small groups.

A notable reproductive behavior of this species is mouthbrooding, wherein there is distinct pairing during courtship and spawning phases.

Geographically, Foa fo is distributed throughout the Indo-Pacific region, from East Africa and the 🌊 Red Sea to 🇵🇫 French Polynesia, extending northward to 🇯🇵 Japan and southward to 🇦🇺 Australia.