More info
Datasheet
| Minimum Tank Size | 150 litres / 39.63 US gallons |
| Maximum Size | 10.0cm / 3.94inches |
| Reef Compatible | Always reef safe |
| Temperament | Mostly peaceful but might be aggressive towards similar species |
| Temperature | 22.2°C / 71.96°F - 25.6°C / 78.08°F |
| Specific Gravity | 1.020-1.025 |
| Carbonate Hardness | 8-12 |
| pH | 8.1-8.4 |
General Description
The Twinspot goby, also known as the "Crab-eyed goby," "Crab-eye goby," or "Four-eyed gobby," is a species belonging to the Gobiidae family. These small fish, scientifically named Signigobius biocellatus, are native to the Western Pacific, ranging from the Philippines to the Solomon Islands and Palau in Micronesia.
Aquarium Suitability
For aquarium enthusiasts, the Twinspot goby demands experience, preparation, and extra care due to its specific needs. While it can survive in a smaller tank with proper setup to meet its requirements, it is highly recommended to house this species in a larger aquarium to ensure its well-being.
Demands, Care, and Hardiness
This species can be challenging to feed as it primarily consumes food from the sand. In smaller tanks, it may struggle to find enough food, necessitating three feedings daily by squirting food into the sand. They are considered average in hardiness and require a well-established aquarium with an ample supply of micro-life for sustenance.
Reef Suitability
The Twinspot goby is always considered reef-safe, making it a suitable addition to reef aquariums without posing a threat to coral life.
Aquarium Setup
Establishing a suitable aquarium for the Twinspot goby involves providing a sandy substrate to mimic its natural feeding behavior. Maintaining water conditions such as a temperature range of 22.2-25.6°C, pH levels between 8.1-8.4, and specific gravity of 1.020-1.025 is crucial. Additionally, a tank size of at least 150 liters equipped with hiding spots and suitable filtration is recommended.
Behaviour
This species is generally peaceful but can exhibit aggression towards similar species. They can coexist as a pair if introduced simultaneously, displaying interesting behaviors within the aquarium environment.
Feeding and Diet
Feeding the Twinspot goby a varied diet is essential for its nutrition and health. Their diet should consist of small crustaceans like krill, mysis, and artemia, as well as zooplankton such as Cyclops and pods.
Dimorphism and Captive Reproduction
In captivity, this species can be bred successfully. Some individuals are bred in captivity, which can be acquired from local fish stores. These fish thrive best when fed a diverse diet and housed in an environment with an adequate pod population.
Habitat and Distribution
The natural habitat of the Twinspot goby includes regions from the Philippines to the Solomon Islands, Vanuatu, and the southern Great Barrier Reef. They are commonly found in sandy substrate areas in the Western Pacific.