Saltwater Fish
Valenciennea wardii
Valenciennea wardii - Ward's Sleeper Goby

Valenciennea wardii (Ward's Sleeper Goby)

Species Description…

Scientific Name: Valenciennea wardii
Common Name: Ward's Sleeper Goby
Species Group: Goby
Habitat: Reef Safe
Care Level: Intermediate
Temperament: Peaceful
Diet Type: Carnivore
Role in Aquarium: Cleanup Crew
Max Fish Length: 4 (inches)
Min Aquarium Size: 30 (gallons)
Native Range: Indo-Pacific, including the Philippines and Indonesia

Overview

  • Commonly known as Ward's Sleeper Goby.
  • Native to the Indo-Pacific region, particularly found in sandy lagoon and reef environments.
  • Recognized by its elongated body, pale coloration, and subtle markings.
  • Highly beneficial in aquariums for its sand-sifting behavior, which helps maintain substrate cleanliness.

Feeding

  • Carnivorous diet, primarily consuming small crustaceans and invertebrates.
  • Requires a varied diet including frozen or live mysis shrimp, brine shrimp, and high-quality marine pellets.
  • Constantly sifts through the sand to find hidden food particles.
  • Supplementing with vitamin-enriched foods enhances overall health and coloration.

Habitat

  • Typically found in sandy-bottom reef environments with plenty of open substrate.
  • Prefers stable water conditions and moderate water movement.
  • Requires a minimum 30-gallon tank, though larger tanks are recommended for pairs.
  • Needs fine sand for burrowing and natural sifting behavior.

Fish Care

  • Optimal water temperature: 74-80°F (23-27°C).
  • Ideal pH level: 8.1-8.4, with a specific gravity of 1.020-1.025.
  • Regular water changes and stable conditions are necessary for long-term health.
  • Prone to jumping, so a secure lid is required to prevent escapes.
  • Provides natural cleaning benefits by aerating and filtering the sand bed.

Compatibility

  • Peaceful species that coexists well with other reef-safe fish.
  • Best kept with non-aggressive tank mates such as clownfish, wrasses, and other gobies.
  • Can be kept in pairs, but may show territorial behavior toward other sand-sifting gobies.
  • Avoid housing with large, aggressive fish that may outcompete or harass them.

Aquarium Behavior

  • Spends most of its time near the substrate, sifting through the sand for food.
  • Helps maintain a clean and aerated sand bed.
  • Generally peaceful and shy, often retreating to burrows when threatened.
  • Providing a well-established sand bed and live rock structures encourages natural behavior.