Encyclopaedia
Slippery Dick Wrasse
Halichoeres bivittatus
A marine fish species of the family Labridae, valued by aquarists for its interesting behavior and beautiful coloration.
- Family
- Labridae
- Origin
- Oceano Atlantico occidentale, dalla Carolina del Nord (USA) e Bermuda fino al Brasile meridionale.
- Origin
- Tropical oceans and reefsExtra-Amazon South AmericaNorth America
- Tank use
- Used in 0 tanks
Share
22 °C - 27 °C
8.1 - 8.4
Marine
Bottom
20 cm
Species description
Geographical Origin and Habitat: Western Atlantic Ocean, from North Carolina (USA) and Bermuda to southern Brazil. 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 20.0 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 66 gallons (approx. 250.0 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. Varied diet: crustaceans, mollusks, polychaete worms, and smaller fish. It is recommended to feed the fish two or three times daily in small portions.
Water Quality: Stable parameters: temperature 22.0-27.0°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. In nature, forms mass spawning aggregations on reef edges. No documented aquarium spawning.
Risks and Diseases: Sensitive to transport stress and high jump risk; requires a tightly fitted aquarium lid.
Fish profile
- Temperament
- Semi-aggressive
- Diet
- Carnivorous. Varied diet: crustaceans, mollusks, polychaete worms, and smaller fish.
- Tank level
- Bottom
- Minimum group
- 1
- Adult size
- 20 cm
- Minimum tank volume
- 250 L
- GH
- n/a
- KH
- n/a
- TDS
- n/a
- Conductivity
- n/a
- Sex ratio
- Singolo
- Feeding frequency
- Giornaliera
- Bioload
- High
- Flow
- Medium
- Jump risk
- Covered tank required
- Reproduction
- Ermafrodita protogino. In natura formano gruppi di deposizione di massa sui margini della barriera. Non documentata in acquario.
- Compatibility & tankmates
- Molto attivo e territoriale da adulto. Può infastidire pesci lenti o timidi e prederà piccoli crostacei.
Ecological Estimates & Biological Models
- Trophic level
- 3.8 ± 0.1 se
- Resilience
- Medium (1.4 - 4.4 years)
- Phylogenetic uniqueness (PD50)
- 0.5
- Bayesian Length-Weight
- a = 0.00933, b = 3.07
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.





