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Whip Fin Flasher Wrasse (Paracheilinus filamentosus)

Whip Fin Flasher Wrasse

Paracheilinus filamentosus
Family
Wrasse / Labridae (Flasher Wrasse)
Care level
Intermediate
Temperament
Peaceful
Reef safe
Reef safe
Max size
9 cm
Min tank
250 L · 66 gal
Origin
Indo-Pacific
Diet
Carnivore
Food
Mysis, Brine shrimp, Small marine pellets, Frozen plankton blends

Overview

The Whip Fin Flasher Wrasse is a small, vividly coloured wrasse where males display reds, purples, and yellows accented by an elongated, whip-like filament trailing from the dorsal fin, especially prominent during courtship or rival displays. Females are more subdued in colour, typically a soft orange or yellow.

It's a peaceful, fully reef-safe fish that adds constant movement and colour to the upper and middle water column, and does well in a small group with one male and several females in a suitably sized tank.

Its small size and calm temperament make it a great addition to a peaceful reef community, though it needs a secure lid given the jumping tendency common to many wrasses.

Compatibility

Whip Fin Flasher Wrasses are peaceful toward other fish and fully reef safe, ignoring corals and invertebrates. Multiple females can be kept with a single male, while two males in a smaller tank may show aggressive flashing displays toward each other.

They mix well with other peaceful community fish, gobies, and blennies without issue.

Health & quarantine

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

Frequently asked questions

What is the whip-like filament on this wrasse?
It's an elongated extension of the dorsal fin, particularly noticeable in males during courtship or rival displays.
Can I keep multiple Whip Fin Flasher Wrasses together?
Yes, ideally one male with several females — two males in a smaller tank may show aggressive displays toward each other.
Is the Whip Fin Flasher Wrasse reef safe?
Yes, fully reef safe with corals and invertebrates.
Will a Whip Fin Flasher Wrasse jump out of my tank?
It can, especially if startled, so a secure, gap-free lid is important.
What tank size suits the Whip Fin Flasher Wrasse?
250 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.