|Wrote by Ankou92, translated by Logow|
von Rintelen & Cai, 2009
Common names :
Water specifications :
- pH : 7,5 to 8,5
- GH : 2 to 4
- KH: 0 to 2
- Temperature : 27 to 29°C / 80.6 to 84.2°F
- Male : 1 to 2 cm
- Female : 1 to 2 cm
Description : The Caridina dennerli, previously called Caridina sp. Cardinal, presents an astonishing colouration pattern for a fresh water shrimp, it looks like Lysmata debelius, who is a salt water shrimp. The colouring goes from red to burgundy and is enhanced by white to bluish dots. The maxilipedes and the first set of pleopods are white, the antenna pods are well developed. The rostrum is also pretty long.
Behaviour : Shy and gregarious specie that behave like salt water dwelling shrimps. These shrimps do not swim. The original natural habitat is rather poor in plants and is made up of rocks, sand and wood, so accordingly the tank should reproduce that as much as possible, therefore only plants like Eleocharis acicularis seem appropriate. This shrimp’s English name is “Rock Dwelling Shrimp” which comes from its natural environment. Neutral rocks will also provide hideouts. According to observations made by a few aquarists that own this specie they appreciate shadows to hide in. This is probably due to their natural habitat where this would be a good survival skill to avoid predators. (See this illustration)
Life span :unknown
Feeding habits : Algae, dry food for shrimps. I give them micro worms, that makes them come out of hiding but I don’t know if it’s the worms themselves of the substrate they are cultivated in the is the reason of this attention. The diet isn’t clearly known yet, experiences of other aquarists owning some will be welcome while we wait for better and precise information on their biology. The importer Mimbon, is the first to import this specie in Europe, recommends food like JBL “Novo Green”. However the excitation concerning this foods seems to be very mild from the shrimp point of view. Some aquarists seem to notice a more carnivorous tendency than anything else with this shrimp.
Sexual dismorphism (def. ) :unknown
Reproduction : According to the first experiences, it would be a direct reproduction that doesn’t need a larval stage in slat water. The complete cycle of incubation, hatching and growth would take place in fresh water conditions. The quantity of eggs is very limited, roughly 20 per incubation.
Specificity : This superb Caridina attract a lot of attention due to its colours. The water specifications are very peculiar as the water should be soft with little minerals, but with a basic pH. One wanting to adventure with the Cardinal Shrimp will have to be very careful with their water conditions and offer a water that suits their specific needs and try to accomplish breeding to limit wild specimens being collected as soon as possible. This Caridina is imported into Europe since end 2007, and is currently being described by scientists. Information relative to their biology will certainly be more abundant when these works will be published.
- A little marvel of nature : Caridina spongicola , by Tipic
- The annotated budak : Shrimps in Sulawesi: A biogeographical survey
Sources (Scientific literature) :
- Biology Letter. (2007) 3, 262-264. doi:10.1098/rsbl.2006.0613, Published on-line 8 March 2007 (pdf)
- K. Von Rintelen (Ex Zitler) & Y. Cai (2006), Caridina spongicola, new species, a freshwater shrimp (Crustacea : Decapoda : Atyidae) from the ancient Malili lake System of Sulawesi, Indonesia. The Raffles Bulletin of Zoology 54(2) : 273-278
- von Rintelen, K. & Cai, Y. (2009). Radiation of endemic species flocks in ancient lakes : Systematic revision of the freshwater shrimp Caridina H. Milne Edwards, 1837 (Crustacea: Decapoda: Atyidae) from the ancient lakes of Sulawesi, Indonesia, with the description of height new species. The Raffles Bulletin of Zoology, 57(2), 343-452.