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Pinktail Trigger Fish (Melichthys vidua)

Pinktail Trigger Fish

Melichthys vidua
Family
Triggerfish / Balistidae
Care level
Intermediate
Temperament
Semi-aggressive
Reef safe
Not reef safe
Max size
30 cm
Min tank
500 L · 132 gal
Origin
Indo-Pacific
Diet
Omnivore
Food
Mysis, Squid, Prawn, Marine pellets, Nori

Overview

The Pinktail Triggerfish is an attractive, relatively docile triggerfish with a dark blue-black body, a distinctive pink-edged tail, and pale banding near the tail base. It's considered one of the more manageable and less aggressive members of the trigger family, making it a reasonable option for keepers wanting a triggerfish without the more extreme aggression seen in species like the Clown Trigger.

It's an omnivorous feeder that accepts a wide variety of foods and adapts well to aquarium life, generally proving to be a hardy, long-lived fish once established in adequate space.

Despite its comparatively calmer temperament, it still needs a large, dedicated tank and is not compatible with a reef display, so planning for its adult size and appetite is essential.

Compatibility

Pinktail Triggerfish are generally less aggressive than many other triggers, though they can still show territoriality as they mature, particularly toward similarly sized fish. They usually coexist well with robust tangs, large angelfish, and other sizeable community fish.

This species is not reef safe — it will eat ornamental invertebrates, small crustaceans, and snails, and can also damage or rearrange coral and rockwork while foraging.

Health & quarantine

A minimum four-week quarantine is recommended, with attention to its bioload and appetite from an early stage, since this species requires excellent filtration and consistent water quality as it grows. It's generally a hardy, resilient fish once established, with most health issues in captivity relating to inadequate tank size or water quality rather than disease susceptibility.

Frequently asked questions

Is the Pinktail Trigger reef safe?
No, it will eat ornamental invertebrates and crustaceans and can damage coral or rearrange rockwork, making it unsuitable for reef tanks.
Is the Pinktail Trigger less aggressive than other triggerfish?
Generally yes, it's considered one of the calmer trigger species, though it can still show territoriality as it matures.
How big does a Pinktail Trigger get?
Up to around 30cm, requiring a large, dedicated tank.
What tank size does a Pinktail Trigger need?
At least 500 litres given its large adult size and active swimming habit.
Can I keep a Pinktail Trigger with other large fish?
Yes, it generally coexists well with robust tangs, large angelfish, and other sizeable community fish.

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.