SeafanEmergencies

Wrasses

Melanurus wrasse

Halichoeres melanurus

Also sold as Tail-spot wrasse, Hoeven's wrasse

Melanurus wrasse (Halichoeres melanurus), photographed in the sea or an aquarium
Photo: Stickpen, Public domain, via Wikimedia Commons
Care level
Beginner
Adult size
14 cm
Minimum tank
189 litres
Temperament
Peaceful
With corals
Reef safe with caution
Captive-bred
Wild-caught (captive-bred rare)
IUCN status
Least Concern
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How do you care for the melanurus wrasse?

Peaceful.

Feeding

Carnivore.

Meaty foods.

Tank and special needs

Plan for at least 189 litres of water (the care sheet says 50 US gallons).

5 to 8 cm sand bed; tight lid.

Corals and invertebrates

Eats fireworms and pyramidellid snails (useful) but also feather dusters, small shrimp and tube worms (LiveAquaria).

Which tankmates suit the melanurus wrasse?

With calm wrasses.

Suggested order in a mixed tank: add after the first peaceful fish.

More than one melanurus wrasse

Keep one melanurus wrasse: two of the same species usually fight.

Other fish

Checked against the other 59 fish in this guide, assuming a tank big enough for both. Individual fish differ, so treat this as a starting point.

Take care (5)

  • Maroon clownfishMaroon clownfish is aggressive and may bully the melanurus wrasse, especially if the bully is added first.
  • Humbug damselHumbug damsel is aggressive and may bully the melanurus wrasse, especially if the bully is added first.
  • Yellow coris wrasseBoth are sand wrasses that use the same sand; give each its own area.
  • Leopard wrasseBoth are sand wrasses that use the same sand; give each its own area.
  • Powder blue tangPowder blue tang is aggressive and may bully the melanurus wrasse, especially if the bully is added first.
Usually fine together (54)

Invertebrates

Only the invertebrates with a known risk are listed.

Avoid together (5)

Take care (2)

  • Tiger tail sea cucumberA stressed or dead tiger tail sea cucumber can release toxins that harm fish; cover pump intakes.
  • Sea appleA stressed or dead sea apple can release toxins that harm fish; cover pump intakes.

Corals and anemones

Only the corals and anemones with a known risk are listed.

No known problems with the corals and anemones in this guide.

These checks follow the reasons fish and invertebrates clash: same species or genus, similar shape, mouth size, temperament, food, burrows, tank size and the order they are added. Individual animals differ; every source agrees on that.

Quarantine and health

Give a sand dish in quarantine.

New fish are the most common way disease gets into a reef tank. Quarantine every fish in a separate tank before it joins the display, and choose a method that suits its tolerance of copper.

Captive-bred or wild?

Wild-caught.

Sources

  1. LiveAquaria (US retailer) care sheetRead 21 October 2026, read in full. Used for: stats.
  2. FishBase species summaryRead 21 October 2026, read in full. Used for: max length, IUCN.

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