Lunare wrasse

Care at a glance

Overview

This is a genuinely aggressive, high energy wrasse that stakes out territory and harasses new tankmates, so it should always be one of the last fish added to a tank. It is not reef safe: it flips rocks looking for crustaceans, mollusks, and worms, and will happily eat cleanup crew snails, hermit crabs, and ornamental shrimp, along with bristleworms and the occasional pest mantis shrimp. Good tankmates are other bold, active fish such as tangs, triggerfish, and puffers rather than shy or slow feeders. Feed a varied carnivore diet several times a day, especially while it settles in.

In the wild

One of the most widespread wrasses in the Indo-Pacific, found from the Red Sea and East Africa to the Line Islands, north to southern Japan and south to Lord Howe Island and New Zealand, in the upper 1–20 m of lagoons and coastal and seaward reefs. It is a fast, restless swimmer that needs at least 473 litres (125 gallons) of mostly open water to patrol, plus rockwork and a sand bed to retreat into, since it wedges into crevices or dives into the sand when startled or settling in for the night. A tight, gap-free lid is essential, since this species jumps readily.

Good to know

Thalassoma lunare is a protogynous hermaphrodite that can live as a male-female pair or in small groups with one male. Its common names, lunare, moon, lunar, and crescent wrasse, all describe the same feature: a curved, moon-shaped tail fin bordered in yellow on adults. Juveniles are blue below with a black spot at the base of the dorsal fin and another on the tail; both fade into the adult's green body and yellow crescent tail as it matures. Adults reach about 25 cm and are among the hardiest wrasses commonly kept.

Common questions

Related species

• 

  Bluehead wrasse

  Thalassoma bifasciatum

  7.1 in (18 cm) · 74 gal (280 L)

  7.1 in (18 cm)74 gal (280 L)73–81°F (23–27°C)

• 

  Green bird wrasse

  Gomphosus varius

  11.8 in (30 cm) · 125 gal (473 L)

  11.8 in (30 cm)125 gal (473 L)72–79°F (22–26°C)

• 

  Dragon wrasse

  Novaculichthys taeniourus

  11.8 in (30 cm) · 106 gal (400 L)

  11.8 in (30 cm)106 gal (400 L)73–81°F (23–27°C)

• 

  Coral hogfish

  Bodianus mesothorax

  7.9 in (20 cm) · 90 gal (340 L)

  7.9 in (20 cm)90 gal (340 L)72–79°F (22–26°C)

• 

  Scott's fairy wrasse

  Cirrhilabrus scottorum

  5.1 in (13 cm) · 90 gal (340 L)

  5.1 in (13 cm)90 gal (340 L)73–81°F (23–27°C)

• 

  Exquisite fairy wrasse

  Cirrhilabrus exquisitus

  4.7 in (12 cm) · 90 gal (340 L)

  4.7 in (12 cm)90 gal (340 L)72–79°F (22–26°C)