(Cryptocentrus leptocephalus)
What is its maximum size?
The Pink-Spotted Shrimp Goby can grow up to approximately 12–15 cm (4.7–6 inches) in length. It is a bottom-dwelling species that spends much of its time near its burrow. Provide plenty of sandy substrate, secure rockwork and hiding places to allow it to display its natural behaviour.
Where is its origin and where is it exported from?
The Pink-Spotted Shrimp Goby originates from the western Pacific Ocean, with a natural distribution extending from Indonesia to New Caledonia, north to southern Japan and south to north-western Australia. It inhabits sandy and muddy coastal areas, sheltered lagoons and reef flats. Specimens entering the aquarium trade may be exported from countries such as Indonesia and the Philippines, depending on collection and supply sources.
Is it reef compatible?
Yes, the Pink-Spotted Shrimp Goby is generally reef safe. It is suitable for reef aquariums and will not normally damage corals. However, it may consume very small crustaceans and other tiny invertebrates, and its burrowing activity can disturb sand around low-placed corals. Ensure that rocks are securely positioned to prevent them from collapsing when the fish digs underneath them.
What should I feed it?
Feed a varied carnivorous diet consisting of quality sinking marine pellets, frozen mysis shrimp, enriched brine shrimp, finely chopped prawns, squid, mussels and other suitable meaty foods. Small crustaceans and other invertebrate-based foods are particularly beneficial.
As this species feeds close to the substrate and often stays near its burrow, make sure food reaches the bottom of the aquarium. Target feeding may be helpful, especially when the fish is newly introduced. Feed small portions once or twice daily, adjusting the amount according to its appetite and body condition.
How many can I keep?
The Pink-Spotted Shrimp Goby is best kept singly unless a compatible, established pair is available. It can be territorial towards other gobies, particularly those that approach its burrow. Keeping multiple individuals requires sufficient floor space, separate territories and careful observation. Avoid mixing unpaired individuals in smaller aquariums.
This species may also form a fascinating symbiotic relationship with a compatible pistol shrimp (Alpheus species). The shrimp excavates and maintains the burrow, while the goby acts as a lookout. Although not essential, a suitable shrimp companion can encourage natural behaviour.
How compatible is it with other fish?
The Pink-Spotted Shrimp Goby is generally peaceful towards other fish and is suitable for many marine community and reef aquariums. Compatible tank mates can include clownfish, tangs, peaceful wrasses, smaller angelfish and other non-aggressive reef fish, provided the aquarium is appropriately sized.
Avoid aggressive predators, fish that bully bottom-dwelling species and highly territorial fish that may prevent it from feeding. It may fight with other gobies or similar burrow-dwelling fish over territory. Small ornamental shrimp and tiny crustaceans may also be at risk of predation.
Water parameters
- Temperature: 24–27°C
- pH: 8.1–8.4
- Specific gravity (salinity): 1.023–1.026
- Ammonia and nitrite: 0 ppm
- Nitrate: Keep as low as practical through efficient filtration and regular water changes.
- Filtration: Good biological filtration and stable water quality are essential.