Foxface Rabbitfish

Siganus vulpinus


(4 Reviews)

Foxface Rabbitfish
Boasting a unique, fox-like face and striking yellow and black body, the Foxface Rabbitfish is a standout addition to any tank. Easy to care for, with a peaceful demeanor and an interesting ability to change colors when threatened, it's a captivating choice for aquarium enthusiasts.

Foxface Rabbitfish

Siganus vulpinus


(4 Reviews)

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Foxface Rabbitfish Care Facts

Care Level: Easy
Temperament: Peaceful
Diet: Omnivore
Reef Safe: Yes -With Caution
Minimum Tank Size: 100 gallons
Max Size: 9 inches

The Foxface Rabbitfish is known under several different common names that include Venemous Foxface, Common Foxface, and Foxface. With its spectacular shape and coloration, the Foxface is easily recognized. Often it is misidentified with its closely relative S. unimaculatus, but the S. unimaculatus features a big black blotch on its sides. The uniqueness of this fish is that it is equipped with stout venomous spines. The Foxface is a hardy marine species, and should be kept in an aquarium where there is plenty of space to swim around.  Due to the presence of these spines, the Foxface can be housed with other peaceful fishes and even with semi aggressive ones as no one dares to come closer to the Siganus vulpinus. The Foxface cannot be combined with other rabbit fishes unless they are young, and the older specimens form pairs and does well in an aquarium. The Foxface is known to nip at and even eats some soft and hard coral types, therefore it is not really considered as reef compatible. Sometimes, the Foxface might looks discolored on acclimatizing in a new aquarium and should not be confused as illness. Since the Foxface Rabbitfish is capable of inflicting painful venomous stings, it must be therefore handled carefully. The Foxface chiefly feeds on algae and other herbivore food in the wild.



Adding the Foxface Rabbitfish To Your Aquarium

This comprehensive guide provides you with essential information for successfully keeping the Foxface Rabbitfish (Siganus vulpinus) in your saltwater marine aquarium. We cover various aspects, including habitat, reef compatibility, size, lifespan, dietary needs in captivity, aquaculture availability, compatibility with other marine species, sexual dimorphism, juvenile to adult coloration changes, temperament, tank requirements, and specific water conditions. We'll also introduce common names for this species and recommend five compatible tank mates. Lastly, we will explain why choosing the Foxface Rabbitfish from Saltwaterfish.com is smart for marine enthusiasts.

Habitat of the Foxface Rabbitfish

The Foxface Rabbitfish, scientifically known as Siganus vulpinus, is commonly found in the Indo-Pacific region, especially in areas near coral reefs, rocky outcrops, and lagoons. They prefer habitats with abundant live rock and ample hiding spots, often seeking refuge among crevices.

Reef Compatibility of the Foxface Rabbitfish

The Foxface Rabbitfish is generally considered reef safe. They are herbivores that primarily feed on macroalgae, making them valuable additions to your aquarium for controlling algae growth. These fish typically do not display interest in corals or other invertebrates, which minimizes the risk of them causing damage.

Size and Lifespan of the Foxface Rabbitfish

Foxface Rabbitfish can grow to a size of 7 to 9 inches (18-20 centimeters) in length. In terms of lifespan, with proper care, they can live for 5 to 7 years in a well-maintained aquarium.

Diet of the Foxface Rabbitfish in Captivity

In captivity, Foxface Rabbitfish are herbivorous and feed on a diet primarily of macroalgae. Providing a well-balanced herbivorous diet, including various marine-based greens such as seaweed sheets and spirulina flakes, is essential.

Aquaculture and Availability of the Foxface Rabbitfish

Foxface Rabbitfish are not available through aquaculture. Most specimens available in the aquarium trade are wild-caught. Therefore, it's essential to acquire them from reputable sources that promote sustainable collection practices, ensuring the ethical treatment of marine species. Saltwaterfish.com is dedicated to providing ethically sourced marine specimens for hobbyists.

Compatibility with Other Fish and Invertebrates

Foxface Rabbitfish are known for their peaceful temperament, making them compatible with various marine species. They coexist well with other non-aggressive fish and invertebrates. However, they may exhibit territorial behavior toward their own species, so keeping only one Foxface in a tank is advisable. It should be pointed out that the spines are venomous. Care should be taken when handling this fish.

Sexual Dimorphism of the Foxface Rabbitfish

Foxface Rabbitfish do not display significant sexual dimorphism. Males and females have similar physical characteristics and coloration.

Coloration Changes from Juvenile to Adult in Foxface Rabbitfish

Juvenile Foxface Rabbitfish are characterized by their vibrant yellow bodies and striking black facial markings. As they mature into adults, their coloration remains largely consistent, with the distinctive markings becoming more pronounced.

Tank Requirements for the Foxface Rabbitfish

To ensure the well-being of your Foxface Rabbitfish, provide a tank with a minimum size of 100 gallons. Maintaining stable water conditions is crucial. The recommended parameters include a pH level of 8.1 to 8.4, a salinity level of 1.020-1.025, and a water temperature range of 74-78°F (23-26°C). Adequate water flow is essential, and the tank should be equipped with abundant live rock to replicate their natural habitat, providing vital hiding spots and grazing areas.

Common Names of the Foxface Rabbitfish

The Foxface Rabbitfish are also called the Foxface Lo, Foxface Rabbitfish, and Venomous Foxface Rabbitfish.

Compatible Tank Mates for the Foxface Rabbitfish

Advantages of Choosing the Foxface Rabbitfish from Saltwaterfish.com

Opting for the Foxface Rabbitfish from Saltwaterfish.com ensures the introduction of healthy and acclimated specimens to your aquarium. Our commitment to ethical sourcing and the welfare of marine species makes us a trusted choice for marine enthusiasts.

In conclusion, the Foxface Rabbitfish is a valuable addition to your saltwater marine aquarium. Their herbivorous nature and peaceful temperament make them a desirable choice for both controlling algae growth and enhancing the visual appeal of your tank. By providing proper care, a balanced herbivorous diet, and an appropriate tank setup, you can enjoy the distinctive presence of the Foxface Rabbitfish for years to come.


Reviewed by: Jeffrey Huth on July 3, 2024

Named him Lemon Drop!!! Beautiful fish!


Reviewed by: Michael Edgerson on April 28, 2024


Reviewed by: Steve Galuna on April 10, 2024

So happy with how healthy and beautiful these fish are!!!


Reviewed by: Brianne Goodon on April 4, 2024

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