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Rhinogobius giurinus (Paradise Goby, Multicoloured Goby)

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A cylindrical, sand-coloured goby with transparent fins. The flanks and dorsal surface are delicately marked with spots and bands. The two dorsal fins bear coppery and whitish patches. Males are more strongly coloured than the females, but otherwise the two sexes are similar.

Fish information (behaviour and breeding):

Basic care similar to its better-known relative, the white-cheeked goby Rhinogobius duospilus. Males are territorial but easily satisfied with a small cave or burrow. Groups can easily be maintained in tanks provided around 15 litres is allotted to each specimen.

These gobies are primarily predators on insect larvae and small crustaceans. They show little interest in flake or pellet foods but can be easily satisfied with frozen bloodworms, live daphnia, etc.

Water chemistry is not critical. In the wild adult fish are found in freshwater and in estuaries. Provided the water is hard and alkaline there is no need to add salt. In a brackish water system these gobies can be easily maintained at around SG 1.005. Avoiding high temperatures and providing plenty of oxygen are critical to the long-term heath of this fish. Ideally suited to subtropical tanks containing other cool-water species such as danios.

Successful breeding is unlikely to home aquaria. Breeding takes place in freshwater, with the eggs laid under stones during the summer. The male protects the eggs until they hatch. After hatching the larvae drift downstream into the sea where they develop. After a few months the juveniles swim back into freshwater, usually inhabiting fast-flowing mountain streams.

Family Group: Miscellaneous
Distribution East Asia: China, Korea, and Japan
Temperature 18-24 C
Size 8 cm
Water Parameters Adaptable, depends somewhat on origin
Water PH 7.0-8.0
Care Level Easy
Water Chemistry More than pH 7 - Alkaline
Sociability Peaceful
Diet Special Needs
Schooling Fish Yes