Encyclopaedia
Weedy Surge Wrasse
Halichoeres margaritaceus
An active and hardy wrasse from surge zones, featuring a cryptic green-brown coloration ideal for high-flow reef tanks.
- Family
- Labridae
- Origin
- Indo-Pacifico: dal Sudafrica fino alle linee di barriera del Pacifico centrale.
- Origin
- Tropical oceans and reefsExtra-Amazon South AmericaAfrica and MadagascarEast Asia
- Tank use
- Used in 0 tanks
Share
23 °C - 28 °C
8.1 - 8.4
Marine
All levels
12 cm
Species description
Geographical Origin and Habitat: Broadly distributed in the tropical Indo-Pacific, from the coasts of South Africa to southern Japan and the Great Barrier Reef. Inhabits shallow wave-swept reef flats and rocky shores.
Taxonomy and Morphology: Belongs to the family Labridae. Features a streamlined, muscular body adapted to withstand heavy surf. Reaches a maximum length of 12 cm.
Social Behavior: Diurnal and active swimmer. Spends daylight hours searching the reef structure for food. Males defend territories containing small harems of females.
Coloration and Sexual Dimorphism: Cryptic patterns with green, reddish, and brown mottled bands. Spawning males develop a bright pink cheek mark and vivid dorsal colorations, whereas females remain drab.
Care, breeding and tankmates
Aquarium Setup: Demands a tank of at least 200 liters with open swimming spaces and a fine sand bed of 5-8 cm for burying. A secure lid is mandatory to prevent jumping.
Diet and Feeding: Carnivorous. Readily accepts mysis, brine shrimp, chopped krill, and pellet food. Aids in the biological control of flatworms and pest snails.
Water Quality: Maintain stable marine conditions: temperature 23-28 °C, pH 8.1-8.4, salinity SG 1.020-1.025. Strong water flow is essential to replicate its natural environment.
Compatibility and Cohabitation: Safe for reef tanks with caution. Peaceful with most fish, but may prey on tiny ornamental shrimps and snails. Avoid overly aggressive wrasses.
Aquarium Breeding: Protogynous hermaphrodites. Spawning in captivity is undocumented due to the complex pelagic larval phase.
Risks and Diseases: Stress from lack of proper substrate causes immunity issues. Vulnerable to marine ich (Cryptocaryon) during initial tank introduction.
Fish profile
- Temperament
- Attivo e pacifico
- Diet
- Carnivoro
- Tank level
- All levels
- Minimum group
- 1
- Adult size
- 12 cm
- Minimum tank volume
- 200 L
- GH
- n/a
- KH
- 8 dKH - 12 dKH
- TDS
- n/a
- Conductivity
- n/a
- Sex ratio
- Harem
- Feeding frequency
- 2-3 volte al giorno
- Bioload
- Medium
- Flow
- Forte
- Jump risk
- Covered tank required
- Reproduction
- Ermafrodita proteroginico. Non documentata in cattività.
- Compatibility & tankmates
- Paziente con coinquilini attivi, può predare piccoli crostacei e lumache parassite.
Ecological Estimates & Biological Models
- Trophic level
- 3.7 ± 0.5 se
- Resilience
- High (less than 15 months)
- Phylogenetic uniqueness (PD50)
- 0.5
- Bayesian Length-Weight
- a = 0.01, b = 3.09
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.





