Back to atlas
FishMarineEasy

Encyclopaedia

Butterfly Wrasse

Halichoeres papilionaceus

A marine fish species of the family Labridae, valued by aquarists for its interesting behavior and beautiful coloration.

Family
Labridae
Origin
Oceano Pacifico occidentale, comune in Indonesia, Filippine, Palau e isole Salomone.
Origin
Tropical oceans and reefsSouth and Southeast Asia
Tank use
Used in 0 tanks

Share

Species challenges
Water Temperature

23 °C - 27 °C

pH Value

8.1 - 8.4

Water type

Marine

Tank level

Bottom

Adult size

12 cm

Species description

Geographical Origin and Habitat: Western Pacific Ocean, common in Indonesia, Philippines, Palau, and the Solomon Islands. Typically found in shallow waters and reef areas rich in hiding places.

Taxonomy and Morphology: Belongs to the family Labridae. Characterized by a body structure adapted to its active lifestyle, showing bright coloration. Size up to 12.0 cm.

Social Behavior: Active species with a semi-aggressive temperament. Shows moderate to high territorial habits depending on sex and population density.

Coloration and Sexual Dimorphism: Males and females display visible differences in color pattern and vibrancy, especially during the courtship phase.

Care, breeding and tankmates

Aquarium Setup: Requires a marine tank of at least 39 gallons (approx. 150.0 liters), decorated with live rocks to provide natural shelter. For sand-dwelling wrasses, a fine sand bed of at least 2-3 inches (5-8 cm) is essential.

Diet and Feeding: Carnivorous. Feeds on benthic crustaceans, worms, mollusks, and frozen foods. It is recommended to feed the fish two or three times daily in small portions.

Water Quality: Stable parameters: temperature 23.0-27.0°C, pH 8.1-8.4, SG stable between 1.020 and 1.025. Monitored nitrates and phosphates.

Compatibility and Cohabitation: Compatible with reef fish. Avoid housing with larger predators or highly aggressive tankmates.

Aquarium Breeding: Protogynous hermaphrodite. Changes sex from female to male based on social organization. Not reproduced in captivity.

Risks and Diseases: Sensitive to transport stress and high jump risk; requires a tightly fitted aquarium lid.

Fish profile

Temperament
Semi-aggressive
Diet
Carnivorous. Feeds on benthic crustaceans, worms, mollusks, and frozen foods.
Tank level
Bottom
Minimum group
1
Adult size
12 cm
Minimum tank volume
150 L
GH
n/a
KH
n/a
TDS
n/a
Conductivity
n/a
Sex ratio
Singolo
Feeding frequency
Giornaliera
Bioload
Medium
Flow
Medium
Jump risk
Covered tank required
Reproduction
Ermafrodita protogino. Cambiano sesso da femmina a maschio in base all'organizzazione sociale. Non riprodotto in acquario.
Compatibility & tankmates
Reef-safe con cautela. Ottimo cacciatore di parassiti nei coralli, ma dannoso per piccoli gamberetti.

Ecological Estimates & Biological Models

Trophic level
3.4 ± 0.5 se
Resilience
High (less than 15 months)
Phylogenetic uniqueness (PD50)
0.5
Bayesian Length-Weight
a = 0.01, b = 3.09
VulnerabilityLow vulnerability (10 / 100)

Image gallery

Licensed images linked to the species or, when marked, to the closest representative taxon.

Related species

Other recommended species with similar care requirements and water parameters.

Last updated: 06/13/2026