Bicolor Foxface Care Guide
Siganus uspi · Saltwater Foxface
What Bicolor Foxface look like
The Bicolor Foxface, or Siganus uspi, exhibits a distinctive body shape typical of the Siganidae family, characterized by a laterally compressed, oval form. Adults can reach a maximum size of approximately 8 inches (20 cm) in standard length. This species displays sexual dimorphism, with males generally exhibiting more vibrant coloration and larger dorsal fins compared to females. The coloration is striking, featuring a yellow-orange body with a prominent black face and a white tail, which serves as a warning coloration to potential predators. Defensive adaptations include venomous spines located in the dorsal fin, which can deliver a painful sting if threatened. Unique morphological features include a well-defined lateral line and robust dentition adapted for grazing on algae.
Behavior & temperament
The Bicolor Foxface is a diurnal species that exhibits a peaceful temperament, often found in small groups or pairs within its natural habitat. It typically occupies the mid to lower levels of the reef, where it grazes on algae and detritus. Breeding behavior has not been extensively documented, but it is believed to be a broadcast spawner, releasing eggs into the water column. Social hierarchy is generally minimal, with individuals displaying a non-aggressive demeanor towards tank mates. However, they can exhibit territorial behavior when establishing a feeding territory, particularly in smaller aquaria.
Diet & feeding
In the wild, the Bicolor Foxface primarily feeds on algae, particularly filamentous and macroalgae. In captivity, it requires a diet rich in marine algae, herbivore pellets, and occasional vegetable matter to maintain optimal health.
Behind the name
The scientific name 'Siganus uspi' derives from the Latin 'Siganus', meaning 'siganid fish', and 'uspi', which is likely a local term or name associated with its discovery or regional significance.
Plan your tank
Check the numbers before you buy: tank volume, salinity, salt mix, water changes, and your ongoing care routine.
Keeping Bicolor Foxface?
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