Overview:
The Diamond Watchman Goby, also known as Valenciennea puellaris, is a popular saltwater aquarium fish known for its sand-sifting behavior. To ensure their well-being, they require a tank of at least 30 gallons with a sandy substrate, allowing them to exhibit natural behaviors. The tank should have plenty of live rock for hiding and grazing. Optimal water conditions include a temperature range of 72-78°F, a pH of 8.1-8.4, and a specific gravity of 1.020-1.025. Adequate filtration and regular water changes are essential to maintain pristine water quality.

Compatibility:
These gobies are generally peaceful and can coexist with a variety of tankmates. They are best kept with other non-aggressive species that occupy different areas of the tank. Avoid housing them with overly aggressive fish or those that may outcompete them for food. They can be kept singly or as a mated pair, but avoid keeping multiple males in the same tank to prevent territorial disputes. They may also form symbiotic relationships with pistol shrimp, enhancing their natural behavior.

Health and Quarantine:
Diamond Watchman Gobies are relatively hardy but can be susceptible to common marine diseases such as ich and marine velvet. To minimize health risks, quarantine new arrivals for at least two weeks before introducing them to the main tank. During quarantine, observe for signs of disease and treat as necessary. Maintain excellent water quality and provide a stress-free environment to prevent illness. Regularly monitor for changes in behavior or appetite, as these can be early indicators of health issues. Providing a balanced diet and stable habitat conditions will help ensure their long-term health and vitality.