---
title: Rockmover Wrasse (Novaculichthys taeniourus)
scientific_name: Novaculichthys taeniourus
common_name: Rockmover Wrasse
taxon: Wrasse
conservation_status: LC - Least Concern
published: 2024-10-28T19:40:13.493Z
updated: 2026-08-19T23:50:55.870Z
tags: Rockmover Wrasse, Novaculichthys taeniourus, Wrasse, Red Sea, Marine Life, Diving
url: https://redseacreatures.com/taxon/fishes/bony-fishes/wrasse/rockmover-wrasse
---

# Rockmover Wrasse (*Novaculichthys taeniourus*)

## Quick facts

- **Group:** Wrasse (*Labridae*)
- **Size:** up to 30 cm
- **Depth:** 3-25 m
- **Diet:** Carnivore
- **Activity:** Diurnal
- **Rarity:** Common
- **Habitat:** Rubble fields and coarse sand beside reef
- **Reproduction:** Protogynous hermaphrodite
- **Conservation status:** LC - Least Concern

## How to recognise it

- adults dark gray-green with a pale spot on each scale and a white bar at the tail base
- juveniles pale with ragged trailing fins, drifting like a torn frond
- usually in pairs, actively turning over rubble
- up to 30 cm

It moves the reef around. This wrasse works rubble fields by taking a stone in its mouth, lifting it and flipping it over, then eating whatever was living underneath, and the stones it shifts can be heavier than the fish. A pair works together, one turning and one waiting on the far side for whatever runs.

Watch a pair for ten minutes and you will see a patch of bottom genuinely rearranged. On a rubble slope with several pairs working it, the surface layer gets turned over regularly enough to matter to everything living in it.

The juvenile is unrecognizable as the same species. It is pale with long ragged fins and it does not swim so much as drift, rocking and tumbling in the surge exactly like a torn piece of algae, which is the point - a small fish in open rubble with no cover has to be something other than a fish. People call it the dragon wrasse and photograph it far more often than the adult.

The change from that to a heavy gray rock-flipper is one of the more complete transformations on the reef.

## Also known as

- **English:** rockmover wrasse, Dragon Wrasse, Tahiti sand wrasse
- **Hebrew:** תערון דק-זנב
- **French:** Labre rasoir masqué, Labre masqué, Labre-rasoir masqué
- **Italian:** Labride dragone
- **German:** Brauner Bäumchenfisch, Bäumchen-Lippfisch
- **Spanish:** cuchillo dragón, Doncella alguera, Señorita alguera
- **Portuguese:** Donzela algueira
- **Czech:** pyskoun třásnoploutvý
- **Japanese:** オビテンスモドキ, Obi-tensumodoki, Obitensumodoki
- **Chinese:** 娘仔魚, 带尾美鳍鱼, 帶尾新隆魚
- **Russian:** Рыба-нож
- **AF:** Rotsskuiwer-lipvis
- **DA:** Dragegylte
- **ET:** Pruunleht novakuliht, Vetikuim
- **FIJ:** Labe
- **MAH:** Likob
- **MAL:** Balala, Pongan, പൊങന്
- **MSA:** Nuri gelang ekor, Keling tanduk, Bayan
- **SMO:** Sugale-gasufi, Sugale-la'o, Sugale-taili
- **SW:** Pono
- **TAH:** Po'ou hou one, Po'ou upaupa, Po'ou
- **TGL:** Isdang bato, Bankilan, Bungat
- **TH:** ปลานกขุนทองมังกร, ปลานกขุนทองย้ายหิน, ปลาพลิกหิน

## Scientific synonyms

- *Hemipteronotus taeniourus* (Lacepède, 1801)
- *Hemipteronotus taeniurus* (Lacepède, 1801)
- *Julis bifer* Lay & Bennett, 1839
- *Labrus taeniours* Lacepède, 1801
- *Labrus taeniourus* Lacepède, 1801
- *Novaculichthys bifer* (Lay & Bennett, 1839)
- *Novaculichthys taeniorus* (Lacepède, 1801)
- *Novaculichthys taeniurus* (Lacepède, 1801)
- *Novaculichtys taeniorus* (Lacepède, 1801)
- *Xyrichthys taeniouris* (Lacepède, 1801)

## Range

Federal Republic of Somalia, Indian Ocean, Kenya, Mozambique, Red Sea, Seychelles, South Africa

---

*Source: [Red Sea Creatures](https://redseacreatures.com/taxon/fishes/bony-fishes/wrasse/rockmover-wrasse)*
*Updated: August 19, 2026*