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Fish

Possum wrasse

Wetmorella nigropinnata
French name : Labre nain possum

The possum wrasse is a very small marine fish of the family Labridae, found on reefs across the Indo-Pacific. It is a cryptic, shy species, reddish-brown with pale bars and a distinctive false eyespot on the dorsal fin, and it spends much of its time hidden among rockwork and caves. It is peaceful and secretive rather than active and open-swimming, and can be kept singly or as a pair in a suitable tank. Its tiny size and retiring nature make it ideal for nano and peaceful reef aquariums, where more boisterous fish would outcompete it. It is a carnivore feeding on small crustaceans and other microfauna such as copepods and amphipods, and should be offered frequent small feedings of finely chopped meaty and frozen foods. A mature tank with plenty of live rock, caves and established pod populations is important for its long-term health. It is fully reef-safe and non-aggressive.

Water
Marine
Origin
Indo-Pacific reefs
Adult size
6 cm
Diet
Carnivore
Temperament
Peaceful
Difficulty
Intermediate
Possum wrasse (Wetmorella nigropinnata)
Illustration

Water parameters

Temperature24 – 27 °C
pH8.1 – 8.4
Carbonate hardness (KH)8 – 12 °dKH
Salinity33 – 35 SG

Tank & stocking

Minimum tank volume100 L
Volume budget per individual 30 L — adds up with tank-mates

“Minimum tank volume” is a reasonable floor, not an absolute limit. The per-individual budget is used by the Aqua app to estimate how heavily a tank is stocked.

Frequently asked questions

What size aquarium does Possum wrasse need?

Provide at least 100 litres to keep Possum wrasse in good conditions.

What water parameters does Possum wrasse need?

A temperature of 24–27 °C, pH 8.1–8.4, saltwater.

Is Possum wrasse peaceful or aggressive?

Its temperament is peaceful.

What does Possum wrasse eat?

Its diet: carnivore.

How big does Possum wrasse get?

Around 6 cm as an adult.

Is Possum wrasse suitable for beginners?

Care level: intermediate.

Planning a tank with Possum wrasse?

AquaTender turns these parameters into live advice: it checks whether your tank is big enough, how heavily it's stocked, and whether your fish are compatible — then tracks water tests, photos and maintenance for you.

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Fish from the same biotope

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