Critically Endangered
Sulawesi Cardinal Shrimp
Caridina dennerli
Sulawesi Cardinal Shrimp is a decapod crustacean in the family Atyidae (order Decapoda) — Caridina dennerli, recorded as Critically Endangered.
The crayfish or crab
Sulawesi Cardinal Shrimp is a small species of freshwater shrimp from Sulawesi (Indonesia) that grows up to 2.5 centimetres (1.0 in) in length.
Range and habitat
Sulawesi Cardinal Shrimp is endemic to Lake Matano and is found among rocks and cliffs, from shallow water down to 10 metres (33 ft). Lake Matano is ultra-oligotrophic, that means that it is extremely nutrient poor and contain very little organic matter. The temperature in Lake Matano varies in the range 27–31 °C (81–88 °F).
Pins are Wikidata “endemic to” fields. Orange dots, when present, are GBIF occurrence tiles — survey bias included.
Habits
Freshwater crayfishes and crabs walk the bed. Dams, silt, and introduced species cut a drainage into fragments they cannot cross.
Crayfishes and crabs need cover and clean water. A named form from one creek is not interchangeable with the next drainage.
In crisis
This species is threatened by pollution from nickel mining and human activities, introduced species like the flowerhorn cichlid and hydro-electric power plants on the southern shore of Lake Matano. Although previously locally abundant, no Sulawesi Cardinal Shrimp have been recorded in the wild since 2013 and the species possibly is extinct in the wild.
Sulawesi Cardinal Shrimp is Critically Endangered on this catalog because that is the IUCN category stored on Wikidata. Confirm the official criteria and any later count on iucnredlist.org.
Sources
Written for this catalog from the English Wikipedia article on Sulawesi Cardinal Shrimp, Wikidata item Q978263. Family and order context is original field-guide writing about the group, not a copied assessment of this one species. Wikipedia text is CC BY-SA. Not an IUCN assessment. Counts, when quoted, can change — confirm them on the recovery programme and on iucnredlist.org.
