Bella Goby (Valenciennea bella) The Bella Goby, Valenciennea bella, is a rare and beautifully patterned sand-sifting marine goby with warm reddish-brown to orange colouration, fine blue facial markings and elongated yellow-tipped dorsal fin rays. Also known as the Bella Sleeper Goby or Bella Sand-sifting Goby, it naturally inhabits sandy and rubble-strewn areas of deeper coastal reefs around the Philippines and southern Japan. This peaceful bottom-dweller continually processes mouthfuls of substrate in search of tiny invertebrates, helping to turn and aerate the sand bed. Its specialist feeding requirements mean it is best maintained in a mature, spacious reef aquarium with a well-established sand bed. Common Name:Bella Goby, Bella Sleeper Goby, Bella Sand-sifting Goby, Beautiful Sleeper Goby. Scientific Name (Latin):Valenciennea bella Maximum Size:Approximately 7–9 cm when fully grown. Adult males may develop a dark throat and mouth, together with more pronounced elongated dorsal fin rays. Water Type:Marine Origin / Natural Habitat:Western Pacific, principally recorded from the Philippines and the Ryukyu Islands of southern Japan, including Okinawa. Bella Gobies inhabit coastal coral reefs at depths of approximately 12–35 metres, favouring areas where fine sand, rock and coral rubble occur together. They live close to the substrate and feed by taking sand into the mouth, filtering out small invertebrates and edible organic material before releasing the cleaned sediment through the gill openings. Water Parameters:Temperature: 24–27°CpH Range: 8.1–8.4Hardness or Salinity: Marine salinity 1.023–1.026 specific gravity; maintain stable salinity, alkalinity, strong oxygenation and consistently high water quality. Temperament:Peaceful towards most unrelated marine fish, but potentially territorial towards other sleeper gobies and similar bottom-dwelling species. Bella Gobies are best kept with calm community fish that will not intimidate them or prevent them from feeding. A naturally compatible male and female pair may share a territory, but two unpaired individuals may fight, particularly in smaller aquariums. Diet:Carnivorous sand-sifting micro-predator. In the wild, the Bella Goby consumes small crustaceans, worms and other benthic invertebrates extracted from the substrate. A mature sand bed containing copepods, amphipods and other natural microfauna is important, but should not be relied upon as its only food source. Supplement regularly with enriched mysis shrimp, Artemia, copepods, finely chopped krill, prawn, clam and small sinking carnivorous pellets. Deliver food close to the bottom and feed at least twice daily, as active sand sifters can lose condition if insufficient prepared food reaches them. Minimum Tank Size:A minimum aquarium volume of approximately 200 litres is recommended for one Bella Goby, with a broad area of mature open sand for natural foraging. A larger aquarium is preferable for a compatible pair or when housing the species alongside other bottom-dwelling fish. Behaviour & Activity:An active bottom-dwelling goby that spends much of the day collecting mouthfuls of sand and releasing the filtered substrate through its gills. This behaviour aerates the sand bed and helps prevent compacted areas, although sand may be scattered onto nearby rocks and low-positioned corals. Bella Gobies frequently construct or occupy shelters beneath rockwork and may carry pieces of rubble around the aquarium. Newly introduced fish can remain hidden while establishing a retreat and may jump if startled. Reef Safe:Reef SafeBella Gobies do not normally eat or deliberately damage corals, anemones or ornamental invertebrates. However, their vigorous sand-sifting activity can deposit sediment onto corals positioned close to the substrate, disturb unsecured frags and reduce populations of beneficial sand-dwelling microfauna. Very small crustaceans and worms living within the substrate form part of their natural diet. Special Requirements or Care Notes:Introduce only to a mature, established aquarium with a substantial area of fine, non-abrasive marine sand. Newly set-up or exceptionally clean systems may not contain enough natural food to support this specialist goby. Ensure prepared foods reach the substrate and monitor the abdomen and overall body condition carefully for signs of weight loss. Position rockwork securely on the aquarium base before adding sand, as the fish may excavate beneath unstable structures. Keep low-growing corals away from its main sifting area and remove accumulated sand from coral tissue when necessary. A tightly fitting lid is essential because sleeper gobies are powerful jumpers and can escape through small openings. Avoid aggressive or highly competitive tank mates. Suitable for:Intermediate to experienced fishkeepers Availability:Rare or occasional in trade All images are a visual representation of the fish you will receive, made to be as accurate as possible. Please note that Mother Nature is a wonderful thing, and variation in patterns and colours will occur — that is part of the unique beauty of these animals.
