Caridina multidentata

Yamatonuma Shrimp ( Caridina multidentata )

The Yamatonuma Shrimp (Japanese大 和 沼 虾, Yamato numaebi, " Yamato freshwater shrimp " ), Amano shrimp or Japanese freshwater shrimp is conducted under the scientific name Caridina multidentata. It belongs to the genus Caridina from the family of freshwater shrimp and is held like in the hobby today.

Designation

The Caridina multidentata was described as Caridina japonica long time. Meanwhile, since it is known that this shrimp has already been described prior to the description as Caridina japonica ever, it reverted to its original name Caridina multidentata. The oldest known name here takes precedence, so the "rename ". Sometimes found but (eg commerce) still the obsolete name again.

Appearance

The body of the Yamatonuma shrimp is slightly translucent. Are linearly arranged points on the sides. Depending on the humic acid in the water can also take on a slightly reddish brown appearance shrimp. The shrimp reaches a length of max. 5 Inches ( with males usually remain slightly smaller). In the aquarium is their life time up to 8 years.

Habitat and food spectrum

The Yamatonuma Shrimp comes from the southern part of central Japan. She lives there in rivers, the newly hatched larvae are washed out to sea, however, and only migrate up the rivers again when they have reached a length of at least one centimeter. The Yamatonuma Shrimp is usually dependent on sea water for reproduction. Reproductive success, which are described in the aquarium literature, when keeping in freshwater aquariums, probably related to a different but very similar looking species that is native to eastern Taiwan. In their habitat the Yamatonuma Shrimp is an omnivore.

Hunting and

The attitude of the Yamatonuma Shrimp has been made known, especially by the Japanese aquarist Takashi Amano and photographer, which is why this shrimp species is commercially available under the name Amano shrimp. Since algae are part of the staple diet of shrimp, they are often used in the aquarium for algae control. The pebbles of the bottom ground, to about 0.5 mm, taken by the shrimp and around eroded the algae. The Beck discs are not cleaned since they have no traction on the glass.

Breeding

In shrimp, a distinction is the primitive and the viviparous, specialized reproduction type. Unlike, for example at the Crystal Red dwarf shrimp that belongs to the specialized Forpflanzungstyp that the Yamatonuma Shrimp is associated with the primitive reproductive type. There are thus not brought ready, small shrimp to the world but it slip small larvae from eggs, live through which various stages of development. The breeding of Yamatonuma Shrimp is not possible in pure freshwater aquarium, as these larvae require salt water to grow into fully grown shrimp. In the wild, keep these shrimp in freshwater areas and to go after the maturation of the fertilized eggs in salt water. They apply from the larvae and go back into the freshwater area. The egg- bearing females should be separated as soon as possible to another aquarium. After hatching, the larvae of the dam should be removed from the pool and the water aufgesalzt the larvae have the ability to survive the larval stage and the mother is not exposed to high salt concentrations. After hatching, the larvae molt shrimp almost every day since the exoskeleton does not grow. The young shrimp feed on algae, but can also be fed with Artemia nauplii or powdered food. Depending on the feeding and water temperature they can be implemented in about 40 days in fresh water.