Saltwater Fish
Allen's Wrasse

Species Description…

Scientific Name: Labropsis alleni
Common Name: Allen's Wrasse
Species Group: Wrasses
Habitat: Fish Only
Care Level: Intermediate
Temperament: Peaceful
Diet Type: Omnivore
Role in Aquarium: Showpiece Fish
Max Fish Length: 4 (inches)
Min Aquarium Size: 30 (gallons)
Native Range: Indo-Pacific region, including Indonesia, Philippines, New Guinea, Solomon Islands, Palau, and Marshall Islands
Labropsis alleni - Allen's Wrasse

Labropsis alleni (Allen's Wrasse)

Overview

  • Native to the warm tropical waters of the Western Pacific, particularly in coral reef environments.
  • Named after Dr. Gerald Allen, a renowned ichthyologist, in recognition of his contributions to marine biology.
  • Displays a striking blend of blues and yellows, with an elongated body ideal for navigating reef crevices.
  • Known for its energetic swimming style and inquisitive nature.

Feeding

  • Primarily feeds on small invertebrates, coral polyps, and plankton in the wild.
  • Adapts well to frozen foods such as mysis shrimp, enriched brine shrimp, and finely chopped seafood.
  • Prefers multiple small feedings throughout the day to maintain its high activity levels.
  • Supplementing with high-quality marine pellets ensures balanced nutrition.

Habitat

  • Inhabits coral reef slopes and lagoon environments with rich coral growth.
  • Requires an aquarium with live rock formations, providing ample swimming space and hiding spots.
  • Thrives in moderate water flow conditions that simulate its natural reef habitat.
  • Prefers tanks with subdued lighting to mimic deeper reef conditions.

Fish Care

  • Optimal water temperature: 76-82°F (24-28°C).
  • pH level: 8.1-8.4, with a specific gravity of 1.023-1.026.
  • Highly sensitive to water quality fluctuations; consistent maintenance is essential.
  • Requires a stable, well-established tank with excellent filtration.

Compatibility

  • Generally peaceful but may become territorial if kept with other wrasses.
  • Best suited for tanks with other reef-safe fish that do not exhibit aggressive behavior.
  • Avoid housing with larger predatory species that may intimidate or outcompete it for food.
  • Compatible with invertebrates and coral, making it a good choice for reef aquariums.

Aquarium Behavior

  • Highly active swimmer, frequently darting around rock formations.
  • Can be shy initially but becomes more confident as it acclimates.
  • Often seen foraging for small food particles along coral structures.
  • Provides a lively presence in the tank with its fast-paced movements and bright coloration.