Onespot Foxface Rabbitfish

The fish species Siganus unimaculatus is known under several different common names in English, including Onespot Foxface Rabbitfish, One Spot Foxface Rabbitfish, One Spot Foxface Lo, Foxface Rabbitfish, Blotched Foxface, and Blotched Rabbitfish.

Siganus unimaculatus has not been evaluated for the IUCN Red List of Threatened Species.

This species is venomous.  

Geographical range, habitat and habits

The Onespot Foxface Rabbitfish lives in the Western Pacific, from approximately 30°N to 30°S. It is a reef dwelling species that can be found down to a depth of 30 meters / 100 feet. Small juveniles form schools that can comprise up to a few hundred specimens, while larger juveniles and adults live in pairs.  

Size and appearance

The largest scientifically measured Onespot Foxface Rabbitfish was 20.0 cm / 7.9 in.

The Onespot Foxface Rabbitfish (Siganus unimaculatus) looks very similar to its close relative the Foxface Rabbitfish (Siganus vulpinus), but the Foxface Rabbitfish does not have a dark spot posteriorly on the upper side of the body.

Onespot Foxface Rabbitfish care

The Onespot Foxface Rabbitfish is a hardy species and can be recommended to novice marine aquarists, provided of course that their aquariums are larger enough. It is however not advisable to use this species for cycling; wait until you have a well established aquarium. The aquarium should be a 75 gallon / 285 liter or larger.

The recommended water temperature is 72-78º F / 22-25.5º C. The pH-value should be kept in the 8.1 to 8.4 range, the carbonate hardness at 8 - 12° dKH, and the specific gravity from 1.020 to 1.025.

It is not a good idea to combine Onespot Foxface Rabbitfish with other rabbitfishes because this can lead to aggressive behaviour in the tank. It is however possible to house a compatible pair together. Other fish, including predatory species, will normally leave the Onespot Foxface Rabbitfish alone because of its venomous spines. The Onespot is usually friendly towards other fishes as long as they are not rabbitfishes.  

This fish has venomous spines and must be handled with caution. If the fins get caught in a net, carefully move the net back and forth until the fish relaxes its fins.

The Onespot Foxface Rabbitfish is considered reef compatible with caution. It may nip at soft corals, especially if not well fed in the aquarium.

Onespot Feeding Onespot Foxface Rabbitfish

In the wild, the Onespot Foxface Rabbitfish feeds chiefly on seaweeds.

The Onespot Foxface Rabbitfish needs an herbivore diet in the aquarium to stay healthy. You can for instance combine spirulina and marine algae with vegetables such as broccoli, spinach and zucchini. It can also be a good idea to add high-quality flakes or pellets suitable for marine herbivore species to the diet.

Feed your fish several small portions throughout the day instead of just one or two large meals. The aquarium should ideally contain plenty of natural algae growth as well since this will make it possible for the fish to carry out its natural grazing behavior.

Onespot Breeding Onespot Foxface Rabbitfish

We do not have any information about breeding Onespot Foxface Rabbitfish in aquariums.

Rabbitfish Articles

Bicolor Foxface Rabbitfish (Siganus uspi)
Coral Rabbitfish (Siganus corallinus)
Foxface Rabbitfish (Siganus vulpinus)
Magnificent Rabbitfish (Siganus magnificus)
Virgate Rabbitfish (Siganus virgatus)