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Ruby Longfin Fairy Wrasse (Cirrhilabrus rubrimarginatus (Ruby/Red-margin Fairy Wrasse — Longfin trade form))

Ruby Longfin Fairy Wrasse

Cirrhilabrus rubrimarginatus (Ruby/Red-margin Fairy Wrasse — Longfin trade form)
Family
Wrasse / Labridae (Fairy Wrasse)
Care level
Intermediate
Temperament
Peaceful
Reef safe
Reef safe
Max size
10 cm
Min tank
300 L · 79 gal
Origin
Western Pacific
Diet
Carnivore
Food
Mysis, Brine shrimp, Small marine pellets, Frozen plankton blends

Overview

The Ruby Longfin Fairy Wrasse is a vividly red-to-ruby coloured fairy wrasse with elongated, flowing fins that trail elegantly as it swims, giving it a more dramatic silhouette than many other Cirrhilabrus species. Males display particularly intense colouration and finnage during courtship or territorial displays.

It shares the general hardiness and peaceful temperament typical of fairy wrasses, generally settling well into a reef tank and adding constant colour and movement to the middle and upper water column.

Its striking finnage and vivid colouration make it a popular premium choice for keepers wanting a genuinely eye-catching fairy wrasse centrepiece.

Compatibility

Ruby Longfin Fairy Wrasses are peaceful and fully reef safe, ignoring corals and invertebrates. They can be kept singly or, in a large enough tank, as one male with several females, though two males in a smaller system may show aggressive displays toward each other.

They mix well with other peaceful to semi-aggressive community fish and are rarely bullied given their alert, quick-swimming nature.

Health & quarantine

This species is generally hardy once acclimated, though like most wrasses it's a capable jumper, so a secure, gap-free lid is essential. A minimum four-week quarantine is recommended, and this species typically settles in and feeds well without major complications.

Frequently asked questions

What makes the Ruby Longfin different from other fairy wrasses?
It has notably elongated, flowing fins that trail as it swims, giving it a more dramatic look than many other Cirrhilabrus species.
Can I keep multiple Ruby Longfin Fairy Wrasses together?
Yes, ideally one male with several females in a large enough tank — two males in a smaller system may show aggressive displays toward each other.
Is the Ruby Longfin Fairy Wrasse reef safe?
Yes, fully reef safe with corals and invertebrates.
Will this wrasse jump out of my tank?
It can, especially if startled, so a secure, gap-free lid is important.
What tank size suits the Ruby Longfin Fairy Wrasse?
300 litres is a reasonable minimum, with more room helpful if keeping a small group.

Care guidance is drawn from our own experience — every fish is an individual, so treat it as a starting point, not a guarantee. Not sure if a species suits your tank? Come ask us in store. New to the terms? Read the care-terms glossary.