''Caridina woltereckae'', or Sulawesi harlequin shrimp as it is commonly known in the aquarium hobby, is a

freshwater shrimp Freshwater shrimp are any shrimp which live in fresh water. This includes: *Any Caridea (shrimp) which live in fresh water, especially the family Atyidae *Species in the genus ''Macrobrachium'' :*'' Macrobrachium ohione'', the Ohio River shrimp : ...

from

Sulawesi Sulawesi (), also known as Celebes (), is an island in Indonesia. One of the four Greater Sunda Islands, and the world's eleventh-largest island, it is situated east of Borneo, west of the Maluku Islands, and south of Mindanao and the Sulu Ar ...

, Indonesia. It is endemic to

Lake Towuti Lake Towuti () is a lake in East Luwu Regency, South Sulawesi province, Indonesia. Surrounded by mountains, it is the largest lake of the island of Sulawesi and one of the five lakes of the Malili Lake system (the other being Matano, and the s ...

. It resembles the smaller and less contrastingly coloured ''

Caridina spongicola ''Caridina spongicola'' is a small species of freshwater shrimp from Sulawesi (Indonesia) that reaches in length. In the wild it strictly lives on an undescribed species of freshwater sponge, making it one of only two known commensal species of ...

'', which is endemic to the same lake.

Threats

It is found on rocky substrate. It is currently under threat by introduced species like the

flowerhorn cichlid Flowerhorn cichlids are ornamental aquarium fish noted for their vivid colors and the distinctively shaped heads for which they are named. Their head protuberance is formally called a Nuchal lines, nuchal hump. Like blood parrot cichlids, they ar ...

, pollution by the human activities and nickel mining and uncontrolled harvesting for the aquarium trade.

References

* Atyidae Freshwater crustaceans of Asia Endemic freshwater shrimp of Sulawesi Crustaceans described in 2009 {{Caridea-stub