Saltwater Fish
Arothron stellatus
Arothron stellatus - Starry Pufferfish

Arothron stellatus (Starry Pufferfish)

Species Description…

Scientific Name: Arothron stellatus
Common Name: Starry Pufferfish
Species Group: Pufferfish
Habitat: Reef Safe with Caution
Care Level: Advanced
Temperament: Semi-aggressive
Diet Type: Omnivore
Role in Aquarium: Showpiece Fish
Max Fish Length: 47 (inches)
Min Aquarium Size: 300 (gallons)
Native Range: Indo-Pacific, including the Red Sea, Indian Ocean, and the Great Barrier Reef

Overview

  • Widely distributed throughout the Indo-Pacific, inhabiting coral reefs, sandy lagoons, and coastal waters.
  • Easily identified by its large, elongated body covered in small white spots against a grayish or brownish background.
  • One of the largest pufferfish species, requiring a spacious aquarium due to its size and swimming habits.
  • Has the ability to inflate when threatened, making it a formidable species in the wild.
  • Highly intelligent and interactive, often developing strong recognition of its caretakers.

Feeding

  • Carnivorous, feeding on crustaceans, mollusks, coral, and small fish in the wild.
  • Readily consumes frozen shrimp, squid, clams, and high-quality marine pellets.
  • Hard-shelled foods such as snails and crabs are essential to prevent overgrown teeth.
  • Multiple feedings per day are recommended to support its large appetite and active metabolism.
  • A well-balanced diet enhances natural coloration and helps maintain overall health.

Habitat

  • Typically found in coral reef environments, sandy bottoms, and seagrass beds.
  • Prefers stable water conditions with moderate water movement.
  • Aquariums should include live rock formations, caves, and sandy substrate to encourage natural behaviors.
  • Thrives in well-established marine tanks with ample swimming space.
  • Providing a structured environment with hiding areas reduces stress and enhances comfort.

Fish Care

  • Optimal water temperature: 74-80°F (23-27°C) to support a strong immune system.
  • Preferred pH range: 8.1-8.4, with a salinity level of 1.020-1.025.
  • Requires high-performance filtration to handle large amounts of waste efficiently.
  • Regular water changes and careful monitoring are essential for maintaining stable water quality.
  • Providing a calm, stress-free environment minimizes the risk of health issues and promotes longevity.

Compatibility

  • Semi-aggressive; best housed with large, robust fish that can tolerate its presence.
  • Compatible with tangs, larger angelfish, and certain wrasse species.
  • Not suitable for reef tanks, as it may consume coral and small invertebrates.
  • Should not be kept with small, delicate fish that may become targets of aggression.
  • A well-structured tank setup with defined territories minimizes potential conflicts.

Aquarium Behavior

  • Highly curious and intelligent, often exploring its environment and interacting with objects.
  • Uses its powerful beak-like teeth to crush shells and scrape algae from surfaces.
  • Capable of inflating when feeling threatened, though this should not be intentionally triggered.
  • Providing an enriched habitat with hiding spaces and open swimming areas supports natural behaviors.
  • Over time, it becomes highly interactive, recognizing caretakers and responding to feeding routines.