Caridina dennerli
Encyclopedia
Caridina dennerli is a small species
of shrimp
from Indonesia
that grows up to 2.5 centimetre (0.984251968503937 in) in length. It takes its name from the German company Dennerle, which funded the expedition that led to the discovery of the species. It is popularly known as the 'Cardinal Shrimp' in the aquarium trade.
and is found among rocks and cliffs, from shallow water down to 10 metres (32.8 ft). Danau Matano is ultra-oligotrophic
, which means that it is extremely nutrient poor and contain very little organic matter. The visibility underwater was estimated to be around 20 m (65.6 ft). The temperature in Danau Matano varies in the range 27–31 °C (80.6–87.8 F). A pH
of 7.4 and a conductivity
of 224 μS
/cm) have been recorded. C. dennerli is believed to feed on detritus in nature.
. The eggs of C. dennerli are relatively large for the size of the shrimp and are carried underneath the female's abdomen.
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
of shrimp
Shrimp
Shrimp are swimming, decapod crustaceans classified in the infraorder Caridea, found widely around the world in both fresh and salt water. Adult shrimp are filter feeding benthic animals living close to the bottom. They can live in schools and can swim rapidly backwards. Shrimp are an important...
from Indonesia
Indonesia
Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...
that grows up to 2.5 centimetre (0.984251968503937 in) in length. It takes its name from the German company Dennerle, which funded the expedition that led to the discovery of the species. It is popularly known as the 'Cardinal Shrimp' in the aquarium trade.
Distribution and ecology
C. dennerli is endemic to Danau MatanoLake Matano
Lake Matano , also known as Matana, is a natural lake in South Sulawesi, Indonesia. It is the deepest lake in Indonesia , and the 10th deepest lake in the world. It is located at .- Endemic Fish of Matano :...
and is found among rocks and cliffs, from shallow water down to 10 metres (32.8 ft). Danau Matano is ultra-oligotrophic
Trophic state index
The quantities of nitrogen, phosphorus, and other biologically useful nutrients are theprimary determinants of a body of water's trophic state index...
, which means that it is extremely nutrient poor and contain very little organic matter. The visibility underwater was estimated to be around 20 m (65.6 ft). The temperature in Danau Matano varies in the range 27–31 °C (80.6–87.8 F). A pH
PH
In chemistry, pH is a measure of the acidity or basicity of an aqueous solution. Pure water is said to be neutral, with a pH close to 7.0 at . Solutions with a pH less than 7 are said to be acidic and solutions with a pH greater than 7 are basic or alkaline...
of 7.4 and a conductivity
Conductivity
Conductivity may refer to:*Electrical conductivity, a measure of a material's ability to conduct an electric current*Conductivity , also the specific conductance, is a measurement of the electrical conductance per unit distance in an electrolytic or aqueous solution*Ionic conductivity, a measure of...
of 224 μS
Siemens
Siemens may refer toSiemens, a German family name carried by generations of telecommunications industrialists, including:* Werner von Siemens , inventor, founder of Siemens AG...
/cm) have been recorded. C. dennerli is believed to feed on detritus in nature.
Description
The female is larger than the male, and has a deeper carapaceCarapace
A carapace is a dorsal section of the exoskeleton or shell in a number of animal groups, including arthropods such as crustaceans and arachnids, as well as vertebrates such as turtles and tortoises. In turtles and tortoises, the underside is called the plastron.-Crustaceans:In crustaceans, the...
. The eggs of C. dennerli are relatively large for the size of the shrimp and are carried underneath the female's abdomen.