
Wrasse, Anthias, and Other Marine Fish
Blue-headed Wrasse
Thalassoma bifasciatum
Photo: Tibor Marcinek · Public domain · Wikimedia Commons
Key facts
- Temperature23–27 °C
- pH8.1–8.4
- Minimum tank250 l
- Adult size15 cm
- Difficulty★☆☆☆☆
- TemperamentSemi-aggressive
- WaterMarine
- Reef safeWith caution
Full profile
- Family
- Labridae
- Origin
- Tropical Western Atlantic
- Size
- 15 cm
- Temperature
- 23 – 27°C
- pH
- 8.1 – 8.4
- Salinity
- 1.023 – 1.025
- Difficulty
- ★☆☆☆☆
- Water type
- marine
- Swimming level
- medium
- Behavior
- semi-aggressive
- Minimum number of individuals
- 1
- Minimum aquarium size
- 250 L
- Diet
- carnivore
- Reproduction
- oviparous; protogynous hermaphrodite
- Reef Safe
- ⚠️ Use with caution
Notes: Adult males have blue heads, black and white bands, and green bodies. Juveniles are yellow.





