Blue Streak Watchman Goby

Cryptocentrus cyanotaenia

(0 Reviews)

Blue Streak Watchman Goby

Blue Streak Watchman Goby

Cryptocentrus cyanotaenia

(0 Reviews)

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Blue Streak Watchman Goby Care Facts

Care Level: Easy
Temperament: Semi-Aggressive
Diet: Carnivore
Origin: Indo-Pacific Ocean
Acclimation Time: 2+ hours
Reef Safe: Yes
Minimum Tank Size: 30 gallons
Max Size: 5 inches

The Blue Streak Watchman Shrimpgoby (Cryptocentrus cyanotaenia), also known as the Lagoon Shrimpgoby, shares close resemblance to the Yellow Watchman Goby (Cryptocentrus cinctus) except for the blue markings, which are a striped blue pattern near the gills and face. They are known to form a symbiotic relationship with shrimps to secure their burrows. As is true for many Watchman Gobies, they thrive in tanks with plenty of live rock, a sandy substrate, and a tightly sealed lid to prevent escapes. Only one should be kept in each aquarium unless it is in a very large tank as they can become territorial. The Blue Streak Watchman will feed on a varied carnivorous diet and are known to be able to spawn in home aquariums. Males and females differ slightly as the females have a more muted yellow coloration. It also has a wonderful "frown" on its face making it seem constantly grumpy. Overall, this is one of the best all-around fish you can have in your tank. It is easy to care for, hardy, fun to watch, beautiful, and a wonderful tank mate. 

The Blue Streak Watchman Goby, scientifically known as Cryptocentrus cyanotaenia, is a fascinating addition to saltwater marine aquariums. This educational and formal product description aims to provide comprehensive information about the care and characteristics of this species, ensuring hobbyists make informed decisions when considering the Blue Streak Watchman Goby for their aquarium.

Species Overview:

The Blue Streak Watchman Goby is native to the Indo-Pacific region, inhabiting sandy and rubble areas near coral reefs. Its distinct blue markings along the body make it a visually appealing choice for aquarium enthusiasts.


In the wild, these gobies are commonly found in shallow coastal areas with sandy substrates. When kept in captivity, replicating this habitat is essential for their well-being. A fine, soft substrate is recommended for the Blue Streak Watchman Goby to exhibit natural digging behaviors.

Reef Compatibility:

This species is considered reef-safe, making it an ideal choice for reef aquariums. It poses little to no threat to coral and is known to form symbiotic relationships with pistol shrimp, creating an intriguing dynamic within the tank.

Size and Lifespan:

The Blue Streak Watchman Goby typically grows 3 to 4 inches in captivity. They can live up to 5 years with proper care, providing aquarium enthusiasts long-term enjoyment.

Diet in Captivity:

These carnivorous gobies thrive on small crustaceans, mysis shrimp, and other meaty foods. Providing a varied diet is crucial to ensure their nutritional needs are met.

Aquaculture Availability:

The Blue Streak Watchman Goby is commonly aquacultured, contributing to sustainable practices within the hobby. This availability ensures that hobbyists can acquire specimens bred in controlled environments.


When considering tank mates, choosing species with similar water and habitat preferences is essential. The Blue Streak Watchman Goby is generally peaceful and can coexist with a variety of tank mates, including:

Sexual Dimorphism:

Sexual dimorphism in Blue Streak Watchman Gobies is not readily apparent, as males and females share similar physical characteristics.

Juvenile to Adult Coloration Changes:

Juvenile Blue Streak Watchman Gobies often exhibit a subdued coloration that intensifies as they mature. The blue streaks become more prominent, enhancing their aesthetic appeal.


Known for their peaceful disposition, these gobies are well-suited for community aquariums. They spend much of their time perched on the substrate, keeping a watchful eye on their surroundings.

Tank Requirements:

Maintaining optimal tank conditions is crucial for the health of the Blue Streak Watchman Goby. Key parameters include:

  • Minimum Aquarium Size: A tank with a capacity of at least 30 gallons is recommended to provide ample swimming space.
  • Water Conditions:

    • pH: 8.1 to 8.4
    • Salinity: 1.020 to 1.025
    • Water Temperature: 72 to 78 degrees Fahrenheit
    • Water Flow: Moderate to high, mimicking the natural reef environment.

Common Names:

Besides the scientific name, the Blue Streak Watchman Goby is known by common names such as "Blue Watchman Goby" and "Cyan Watchman Goby."

Why Choose

When considering where to purchase the Blue Streak Watchman Goby, stands out as a reputable source for marine livestock. Their commitment to providing healthy and sustainably sourced specimens ensures that hobbyists receive top-quality marine life for their aquariums. With a wide selection, expert guidance, and a focus on responsible practices, is a trusted choice for enthusiasts seeking the Blue Streak Watchman Goby.

In conclusion, the Blue Streak Watchman Goby is a captivating addition to saltwater marine aquariums, offering aesthetic appeal and exciting behaviors. Aquarium enthusiasts can create a thriving and harmonious underwater environment by adhering to their specific care requirements and considering factors such as tank mates and aquaculture availability. For those looking to add this stunning species to their collection, emerges as a reliable source, ensuring a seamless and enjoyable experience in marine aquariums.

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