Pinktail Triggerfish
Melichthys vidua
Also known as Pinktail Durgon, Paddlefin Triggerfish, White-tailed Triggerfish
Care at a glance
- Temperature
- 72–79°F (22–26°C)
- pH
- 8.1–8.4
- Adult size
- 15.7 in (40 cm)
- Minimum tank
- 180 gal (680 L)
- Temperament
- Mostly peaceful
- Social behavior
- Solitary
- Swim level
- Middle
- Difficulty
- Medium
- Breeding
- No record
- Rarity
- Common
- Reef safe
- Reef safe with caution
- Origin
- Indo-Pacific, from East Africa to Hawaii and the Tuamotu Islands, north to southern Japan
- Family
- Balistidae
Overview
This trigger is on the calmer, more reef-tolerant end of the family and can settle into a mixed FOWLR community reasonably well if introduced with care, but it is still an opportunistic feeder rather than a true planktivore, and it will hunt down small fish, crabs, and ornamental shrimp given the chance, so reef safe here means caution, not a guarantee. Feed a varied diet of squid, krill, clams, and other meaty foods along with some algae, and include hard-shelled items to wear down its teeth. It is not venomous, but it digs and redecorates enthusiastically, so anchor rockwork well and expect the sand bed to move around.
In the wild
Ranges across coral reefs of the Indo-Pacific, typically from the surface to about 60 meters and often deeper on outer reef slopes. It forages over rock and rubble for a broad mix of food and blows jets of water into the sand to uncover buried prey, a habit that shows up in the tank too. It needs a long aquarium with a wide open swimming lane plus solid live rock structure to claim as a territory.
Good to know
Melichthys vidua is a triggerfish in the family Balistidae, reaching about 40 cm, with a deep green to almost black body, translucent white rear dorsal and anal fins, and the bright pink tail that gives it its name. It is more of a generalist than the strictly planktivorous triggers, eating algae and detritus alongside crustaceans, small fish, octopus, and sponges, so it forages across a wider range of food types than a Niger or Bluethroat.
Did you know
Its emerald body and bright pink tail make it one of the more distinctively colored triggerfish, but the body can look almost entirely dark green to black under actinic lighting, with the pink tail providing the only real flash of color.
Where to buy
Some links may not be the exact species or variety.
- LiveAquaria Freshwater and saltwater fish, inverts and corals
- Saltwaterfish.com Marine fish, corals and inverts shipped overnight
…or ask your local fish store.
Appears in
Keeping Pinktail Triggerfish?
Track water tests, reminders and stocking fit.
Related species

Black durgon
Melichthys niger15.7 in (40 cm)124 gal (470 L)75–81°F (24–27°C)
Crosshatch triggerfish
Xanthichthys mento11.8 in (30 cm)106 gal (400 L)70–79°F (21–26°C)
Niger Triggerfish
Odonus niger11.8 in (30 cm)180 gal (680 L)72–79°F (22–26°C)
Bluethroat Triggerfish
Xanthichthys auromarginatus9.1 in (23 cm)125 gal (473 L)72–79°F (22–26°C)
Clown Triggerfish
Balistoides conspicillum19.7 in (50 cm)300 gal (1,135 L)72–79°F (22–26°C)
Queen triggerfish
Balistes vetula19.7 in (50 cm)238 gal (900 L)72–81°F (22–27°C)
