CATDOLL : CATDOLL: Is Osmanthus fish a rainbow trout?

1. Is Osmanthus fish a rainbow trout?

no,

Mandarin fish (Siniperca chuatsi) is a completely freshwater fish. It likes to live in rivers, lakes, reservoirs and other clean water bodies with lush aquatic plants. It usually lurks at the bottom of the water during the day and moves around to find food at night. It is a carnivorous fish with a ferocious nature and feeds on fish and other aquatic animals throughout its life.

Red trout, also known as rainbow trout, is a world-famous fish species belonging to the family Salmonidae in the order Clupeformes. It has been introduced for breeding in 86 countries and regions.

Rainbow trout is a cold-water fish that requires clear water, gravel bottom, and sufficient oxygen in flowing water. Its living water temperature is 5-24℃, the suitable water temperature is 7-18℃, and the most suitable water temperature for growth is 13-18℃. In the suitable water temperature range, rainbow trout eats vigorously, grows rapidly, and its body can maintain a good metabolism.

2. What is the origin of Procambarus clarkii? ?

The scientific name of Procambarus clarkii is Procambarus clarkii, and "clarkii" is the pronunciation of its specific epithet clarkii.

III. Harm caused by invasion of Procambarus clarkii

Aquaculture is one of the important industries in my country with a long history. Almost all water bodies that can be used for aquaculture, such as rivers, lakes, ponds, reservoirs, rice fields and parks, are more or less used for aquaculture. The alien species involved include those introduced from abroad, such as Procambius clarkii, Macrobrachium rosenbergii, Cherax quadricianalus, rainbow trout, Tilapia sp., Anguilla anguilla, Polyodoh spathula, Colossoma brachypomum, Morone saxatilis, and some carnivorous fish (especially those that feed on small fish) such as Micropterus salmoides, Morone saxatilis and Morone chrysops, etc. The perch (Perca fulviatilis) introduced from the Irtysh River has led to the extinction of Xinjiang bighead carp (Aspiorhynchus laticeps) in Lake Bosten, Xinjiang. In addition to these species introduced from abroad, fish native to southern my country, such as the "four major carps" (silver carp, bighead carp, etc.) were introduced to high-altitude waters in the northwest and southwest. These species and the small miscellaneous fish (goby, wheatear fish, etc.) brought with them have caused no less disaster than foreign species. The breeding of bighead carp (Aristichthys nobilis) in Qilu Lake and Xingyun Lake in Yunnan has led to a sharp decline in the number of local fish species Cyprinus pellegrini in Qilu Lake and Xingyun Lake, and now has to rely on artificial breeding. For example, Procambius clarkii was introduced from Japan to China in the early 1940s for artificial breeding. Unlike most aquatic species, female Procambius clarkii hatches its own eggs, so there is no need to spend money on artificial hatching. Once the stock is stocked in the pond, Procambius clarkii can achieve self-sustaining, and after harvesting, there is no need to stock the stock again. Procambarus clarkii is often co-cultured with other crops, especially rice. Individuals that escape during harvest dig holes in the embankments to survive. In the next season, a breeding population is formed, living on the remaining crops and other food. It was first farmed in Nanjing and Chuxian County, Anhui Province, and then spread to central, northern and southern China, forming a large population in the wild.

4. How big can Procambarus clarkii grow?

24cm,0.5kg