Blue Tang
Paracanthurus hepatus
Also known as: Regal Tang, Palette Surgeonfish, Hippo Tang, Dory Fish
The Blue Tang, also known as the Regal Tang or "Dory" from Finding Nemo, is a stunningly beautiful surgeonfish with a vibrant blue body, black palette pattern, and bright yellow tail. They play a crucial role in reef ecosystems by controlling algae growth.
Max Size
12 inches (31 cm)
Lifespan
8-20 years
Depth
2-40 meters
Water Type
saltwater
Scientific Classification
- Class
- Actinopterygii
- Order
- Perciformes
- Family
- Acanthuridae
- Species
- Paracanthurus hepatus
Habitat & Distribution
Habitat
Distribution
Behavior
Blue Tangs are active swimmers that spend most of their day grazing on algae. They can be territorial with other tangs but generally peaceful with other species. When stressed, they may lose some of their vibrant coloring.
Reproduction
Blue Tangs are broadcast spawners, releasing eggs and sperm into the water column at dusk. The eggs hatch within 24 hours, and larvae drift in the plankton for weeks before settling on reefs.
Aquarium Care Guide
Minimum Tank Size
100 gallons
Care Level
Moderate
Temperament
Semi-Aggressive
Temperature
75°F - 82°F
Diet
Herbivore - primarily algae, also accepts prepared foods
Can Blue Tang Live With...?
Explore detailed compatibility guides for Blue Tang with other popular aquarium fish.
Conservation Status
Main Threats
- Coral reef degradation
- Over-collection for aquariums
- Climate change
🎉 Fun Facts
- Blue Tangs can "play dead" when threatened by lying on their side
- They have a sharp spine near their tail for defense
- Their blue color comes from light interference, not pigment
- Juveniles are bright yellow and develop blue coloring as they mature
- They can live over 20 years in well-maintained aquariums
