Saltwater Fish
Blue Tang

Species Description…

Scientific Name: Paracanthurus hepatus
Common Name: Blue Tang
Species Group: Surgeonfish
Habitat: Reef Safe
Care Level: Intermediate
Temperament: Peaceful
Diet Type: Herbivore
Role in Aquarium: Showpiece Fish
Max Fish Length: 12 (inches)
Min Aquarium Size: 180 (gallons)
Native Range: Indo-Pacific
Paracanthurus hepatus - Blue Tang

Paracanthurus hepatus (Blue Tang)

Overview

  • Native to the Indo-Pacific region, commonly found in coral reef environments.
  • Distinguished by its brilliant blue body and vibrant yellow tail, making it one of the most recognizable fish.
  • Active swimmers, often seen grazing on algae on the reef.
  • Noted for its bold and energetic personality, frequently swimming in the water column or near the reef substrate.

Feeding

  • Herbivorous, feeding primarily on algae, seaweed, and other plant matter found on the reef.
  • Readily accepts a diet of high-quality algae-based flakes, pellets, and frozen foods.
  • It thrives when given a variety of greens, including spirulina and other algae supplements.
  • Frequent feedings mimic its natural grazing behavior and help maintain its vibrant coloration.

Habitat

  • Prefers coral reefs, particularly those with abundant algae growth and rocky ledges for hiding.
  • Often found in both shallow and deeper reef zones, where it can easily graze and find shelter.
  • It requires a stable, well-oxygenated environment with proper water flow to support its active swimming patterns.
  • Happy in aquariums with ample rockwork and space to explore, offering plenty of hiding spots.

Fish Care

  • Optimal water temperature: 75-82°F (24-28°C).
  • pH level: 8.1-8.4, with a specific gravity of 1.023-1.026.
  • Stable water quality is essential, with a well-maintained filtration system to prevent algae overgrowth.
  • Routine maintenance and regular water changes are necessary to prevent nutrient imbalances that can harm the fish.

Compatibility

  • Generally peaceful but can become territorial toward other tangs or similarly shaped fish.
  • Best kept with other non-aggressive species, though it should be monitored to avoid territorial disputes.
  • Avoid housing with overly aggressive species or small, defenseless fish.
  • Prefers to have room to swim and explore freely without competition for space or food.

Aquarium Behavior

  • Active swimmer, frequently seen patrolling the reef or grazing on algae-covered surfaces.
  • Displays social behavior, often interacting with tank mates while swimming or feeding.
  • Becomes more confident in a well-structured aquarium where it feels safe and can engage in its natural behaviors.
  • Often seen displaying its vibrant blue and yellow coloration, particularly during feeding or playfully interacting with tank mates.