Saltwater Fish
Taenianotus triacanthus
Taenianotus triacanthus
(Leaf Scorpionfish)

Species Description…

Scientific Name: Taenianotus triacanthus
Common Name: Leaf Scorpionfish
Species Group: Scorpionfish
Habitat: Reef Safe with Caution
Care Level: Advanced
Temperament: Predatory
Diet Type: Carnivore
Role in Aquarium: Predator
Max Fish Length: 5 (inches)
Min Aquarium Size: 50 (gallons)
Native Range: Indo-Pacific
Taenianotus Triacanthus - The Leaf Scorpionfish

Taenianotus Triacanthus# (The Leaf Scorpionfish)

Overview

  • Native to the Indo-Pacific, commonly found in coral reefs, rocky crevices, and lagoon environments.
  • Recognized for its leaf-like body shape and unique ability to sway with water currents, mimicking a floating leaf.
  • A slow-moving, ambush predator that relies on its camouflage to capture unsuspecting prey.
  • Comes in a variety of colors, including yellow, pink, brown, and green, to blend seamlessly with its surroundings.
  • Best suited for aquariums with plenty of rock formations, caves, and subdued lighting to mimic its natural habitat.

Feeding

  • Carnivorous, primarily preying on small fish and crustaceans in the wild.
  • Requires a diet of live or frozen marine foods such as mysis shrimp, brine shrimp, and small feeder fish.
  • May take time to accept frozen foods and often needs live food initially before transitioning.
  • Should be fed multiple times per week, as it does not require daily feeding like more active fish.
  • A varied diet ensures proper nutrition and helps maintain its natural hunting instincts.

Habitat

  • Prefers reef-associated environments with rock crevices, coral rubble, and shaded overhangs.
  • Frequently found resting motionless, blending into coral or rocky surfaces.
  • Aquarium setups should include live rock for natural hiding spots and to create visual barriers.
  • Requires stable water parameters and efficient filtration to prevent waste buildup.
  • Providing dim lighting or shaded areas helps reduce stress and supports natural behavior.

Fish Care

  • Optimal water temperature: 74-80°F (23-27°C) to support metabolic stability.
  • Preferred pH range: 8.1-8.4, with a salinity level of 1.020-1.025.
  • Requires regular water changes and a well-maintained aquarium to prevent disease.
  • Not reef-safe, as it may prey on small fish and ornamental shrimp.
  • Providing rock structures and a low-stress environment helps maintain overall well-being.

Compatibility

  • Best housed with other slow-moving or similarly predatory species.
  • Compatible with larger angelfish, groupers, and other predatory marine species.
  • Should not be housed with small fish or shrimp, as they will likely become prey.
  • Best suited for a species-specific or predator-focused aquarium.
  • Providing ample hiding spots and structured territories reduces stress and aggression.

Aquarium Behavior

  • A slow-moving, highly camouflaged predator that remains motionless for long periods.
  • Frequently observed swaying gently with the water movement to mimic a drifting leaf.
  • More active during feeding times, striking prey with incredible speed.
  • Providing a structured environment with rockwork encourages natural behaviors.
  • Over time, it may become accustomed to its caretaker and respond to feeding cues.