Expert
Caridina sp. Cardinal
24–28°C · pH 7.8–8.5 · 30L
£29.99
Tiny rainbow Sulawesi Caridina at ~0.6cm for expert keepers. Peaceful; 26-30C, pH 7.5-8.5, from 10 litres.
Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller — pick a size variant above for the actual shipping size. Photos are AI-enhanced, so the animal may show subtle colour or marking differences.
Caridina sp. rainbow
Caridina sp. rainbow are a shoaling species — they need 6+ to feel safe and show their full colour. Larger shoals stay calmer, eat better, and look stunning.
Tiny rainbow Sulawesi Caridina at ~0.6cm for expert keepers. Peaceful; 26-30C, pH 7.5-8.5, from 10 litres.
Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller — pick a size variant above for the actual shipping size. Photos are AI-enhanced, so the animal may show subtle colour or marking differences.
Add the hobby's best algae-eating shrimp to your aquarium with Amano Shrimp. Peaceful, hardy, and larger than cherries — ideal for planted community tanks. Order now for UK delivery.
Maintain these water conditions for optimal health and vibrant colors
Smallest does not mean plainest. At a recorded 0.6 cm, the rainbow Caridina is the tiniest shrimp in this part of our range — a delicate Sulawesi species whose varied colouring earned it the rainbow name. It also carries the most modest space requirement of our Sulawesi listings, with a 10-litre recorded minimum, though the expertise its water demands is anything but modest, and the expert care rating should be taken at face value. This is a species for keepers who enjoy precision for its own sake: the animal is minute, the parameters are particular, and the satisfaction lies in running a system exact enough for both.
Like its Sulawesi relatives, it wants genuine warmth and alkalinity: 26–30 °C, pH 7.5–8.5 and hardness from 5 to 15 dGH. The expert rating reflects how little margin a 0.6 cm animal has when parameters drift — there are simply no reserves at that size, which is why keepers who succeed with this species talk about routine and consistency more than equipment. Held stable, it is a peaceful omnivore that works the tank floor through a typical two-year life. The 10-litre minimum does make it one of the few Sulawesi species a desktop-scale tank can technically house, provided heating and chemistry hold absolutely steady at that volume.
Suitable company includes other peaceful dwarf shrimp, snails, peaceful invertebrates and small nano fish with no interest in shrimp as food. Anything aggressive or predatory is recorded as unsuitable — crayfish, large cichlids, shrimp-hunting loaches, or simply any fish whose mouth is big enough to end a shrimp this small. In practice many keepers settle on shrimp-and-snail arrangements, which keep every recorded risk off the stocking list at once.
Treat the 10-litre figure as a floor rather than a target, and prioritise stability above all else — that single habit decides most outcomes with this species. Confident Sulawesi keepers can order for UK delivery under our live arrival guarantee, with transport by licensed live-animal courier.
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