Thalassoma bifasciatum
| Identification | Terminal phase male: unmistakable bright blue head separated from a green body by two bold black vertical bars. Initial phase fish are yellow or white with a dark stripe. |
| Maximum Length | Up to 6 inches (15 cm) |
| Origin | Atlantic — Florida, Caribbean, Gulf of Mexico |
| Minimum Tank Size | 75 gallons |
| Reef Compatibility | With caution — may nip at small crustaceans |
Behavior
Active, fast-swimming fish common on Atlantic reefs. Terminal phase males are haremic and defend territories. One of the most abundant Caribbean reef fish. Hardy and easy to feed.
Diet & Feeding
Carnivore. Feeds on small fish, invertebrates, and zooplankton. In the aquarium, accepts most meaty frozen foods and prepared diets readily.