Blue Tang (Paracanthurus hepatus)
The Blue Tang (Paracanthurus hepatus), also commonly
called the Regal Tang, Hippo Tang, or Palette Surgeonfish, is one of the most
recognizable and beloved fish in the marine aquarium world. Popularized by
movies like Finding Nemo and Finding Dory, this vibrant,
energetic species is prized for its striking blue coloration and active
swimming habits.
Key Features
- Appearance:
Bright royal blue body with a bold black "palette" pattern and a
vivid yellow tail.
- Size:
Up to 12 inches (30 cm) in the wild; typically 6–10 inches (15–25 cm) in
aquariums.
- Temperament:
Generally peaceful but can be territorial toward other tangs.
- Diet:
Primarily herbivorous (algae grazer) but will also consume meaty foods.
- Habitat:
Found on coral reefs in tropical marine waters; active swimmers that
require ample space.
The Blue Tang's stunning colors, peaceful nature, and lively
swimming behavior make it a centerpiece in large reef aquariums, though it
requires careful attention to space and water quality.
Common Names and Scientific Name
- Common
Names: Blue Tang, Regal Tang, Hippo Tang, Palette Surgeonfish, Pacific
Blue Tang
- Scientific
Name: Paracanthurus hepatus
Fun Fact:
Despite being called a "tang" or "surgeonfish," the Blue
Tang is the only species in the Paracanthurus genus!
Appearance
Blue Tangs are among the most eye-catching marine fish due
to their unique coloration and body shape.
Coloration
- Body:
- Vibrant
royal blue.
- Black
"palette" shape extending from the eyes to the tail.
- Tail:
- Bright
yellow.
- Fins:
- Pectoral
fins may also have yellow highlights.
Size
- Average
Aquarium Size: 6–10 inches (15–25 cm).
- Maximum
Wild Size: Up to 12 inches (30 cm).
Shape
- Body:
Oval, laterally compressed for speed and maneuverability.
- Snout:
Slightly pointed, designed for picking algae off rocks.
- Spine:
Sharp scalpel-like spines at the base of the tail (used defensively).
Sexual Dimorphism
- No
visible differences between males and females; they appear identical
externally.
