Far Eastern freshwater shrimp Palaemonetes sinensis
Content: In terms of habitat, this is a slightly more cold-loving species than their Japanese relatives. The temperature range is quite wide: 15–30 ° C, but the optimum mode should be considered as 20–24 ° C. Under such conditions, shrimp live longer than in warmer water. If this does not contradict the needs of other aquarium inhabitants, it is recommended to change the temperature depending on the season: in the winter, cool the water to 18–20 ° C, and with the onset of late spring, warm it to the upper limit of the optimum. However, they easily adapt to the content in water and with a higher temperature.
They do not pay attention to healthy fish at all, possess enviable stamina, actively behave even in the daytime, they conflict with each other only in a limited space. To avoid civil strife, in a 100-liter aquarium there should be no more than 10-15 of them. With aeration and a water treatment system, the density can be slightly increased. Shrimps need clean, oxygen-rich water with a hardness of at least 10 °.
Day shrimp lead an active lifestyle, quickly moving along the bottom in search of food, crawling along the leaves of plants. In a moment of danger, they make abrupt, jerky swimming movements in the water column with the help of contractions of the tail fan. Can sail back. Shrimps are peaceful, do not attack fish. However, with a high density of landing due to the struggle for living space, cannibalism is observed: stronger individuals destroy the weak. Shelter needed.
In the process of growth, the shrimp molt, dropping the chitinous shell, and at this moment they are completely defenseless. They are capable of arbitrary separation of limbs in cases of danger. After molting, the limbs are regenerated.
They can be perfectly kept in aquariums with fish.
Omnivores. Perform the role of orderlies. Prone to cannibalism. Dry and freeze-dried, live and frozen foods, vegetables (carrots, cucumbers), tree leaves, algae, and snails readily eat in the aquarium. According to aquarists, the best fighters with thread in the aquarium.
In case of danger, they are capable of arbitrary separation of limbs (after molting, limbs are regenerated). Active in the daytime. Demanding on water quality and oxygen content in it.
Nutrition: These shrimp are not particularly whimsical to the set of products they offer. With an enviable appetite, they absorb everything that “falls” on their heads and what is found in the aquarium: algal fouling, not eaten fish food, special food for crustaceans, any remains of fish, meat, other shrimp, small crustaceans and worms. Especially the aquarists loved them feeding a live tubule. In short, one cannot attribute them to gourmets.
Habitat - lake Hanka, tributaries of the river. Cupid (both from the Russian and Chinese sides of the border), p. Suifune, as well as ponds in Vladivostok. Parameters in the natural habitat GH 4-5, KH 3). The aquarium can be kept at pH 5.5 - 7.5, gh 10, kh 3 - 6.
Temperature: 18 to 30 degrees. Powerful filtering and aeration are required, especially in hot weather. At high temperatures (27-30 degrees), shrimp can live, but their lifespan will be reduced.
Breeding. They reach puberty at about the age of 1 year. The female lays up to 100 eggs. The period of development of eggs depends on the water temperature for 2-4 weeks. It does not interbreed with anyone. Propagate in fresh water, but only 5-7 babies survive, and sometimes less.