Common name: Singapore shrimp-goby

Scientific name: Cryptocentrus leptocephalus Bleeker, 1876

General information

The Pink and Blue Spotted Watchman Goby, scientifically known as Cryptocentrus leptocephalus, is a small, colorful fish that is popular among reef aquarium enthusiasts. This species is known for its distinctive pink spots and blue stripes, which make it a visually appealing addition to any tank. They are relatively hardy and can adapt well to life in captivity.

Details

Recommended minimum tank volume
75 liter (20 gallons)
Salinity
S.G. 1.020 to 1.025
Temperature
24 to 29 °C (75 to 84 °F)
Acidity
pH 8.1 to 8.4
Average size
10 cm (4″)
Care level
Moderate to easy Needs a sandy substrate.
Diet
Carnivore Enjoys frozen and live foods.
Social
Pair Pairs form strong bonds.
Reefsafe
Yes
Aggression
Peaceful
Captive bred
Yes Bred in home aquariums.

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Chordates
    Chordata
  3. Class
    Ray-finned Fishes
    Actinopterygii
  4. Order
    Perciformes
    Perciformes
  5. Family
    Goby
    Gobiidae
  6. Genus
    Shrimp Goby
    Cryptocentrus
  7. Species
    Singapore shrimp-goby
    Cryptocentrus leptocephalus Bleeker, 1876
  8. Synonyms
    Cryptocentrus obliquus (Herre, 1934)
    Cryptocentrus singapurensis (Herre, 1936)
    Smilogobius obliquus Herre, 1934
    Smilogobius singapurensis Herre, 1936

Care

Pink and Blue Spotted Watchman Gobies are relatively easy to care for. They require a tank with a sandy substrate to burrow and create their homes. These gobies are peaceful fish that can coexist with a variety of tank mates. They are omnivores and will accept a wide range of foods, including frozen and live foods, as well as high-quality marine flake and pellet foods.

Reproduction

In the aquarium, Cryptocentrus leptocephalus may breed if a compatible pair is established. The male typically guards the eggs until they hatch. Hobbyists interested in breeding should provide a stress-free environment with plenty of hiding places.

Symbiosis

One of the most interesting aspects of the Pink and Blue Spotted Watchman Goby is its symbiotic relationship with pistol shrimps, particularly those of the genus Alpheus. In this mutualistic relationship, the shrimp maintains a burrow that both the shrimp and goby inhabit. The goby acts as a lookout, warning the shrimp of approaching predators, while the shrimp provides the goby with a safe haven.

Habitat

C. leptocephalus is found in the Indo-Pacific region, from the eastern coast of Africa to the western Pacific Ocean. They inhabit shallow, sandy areas near coral reefs, often sharing burrows with pistol shrimps.