Introduced the sources and transport of fish and the main import and export countries in the marine ornamental fish trade of the world,and also analyzed the marine ornamental fish trade in Tianjin.

A preliminary study on the effects of nitrifuing bacteria to the fresh water quality and the ornamental fish living in it;

The development trend of ornamental fish industry in Beijing are fit for characteristics of urban-type development of fisheries pace, good development opportunities and social environment, so ornamental fish industry will become a vibrant new industry, and has very broad prospects for development.

In this paper,we introduced the breeding status ,natural yielding area and resources status of omamental fish,in the meantime,we analyzed the necessities of exploiting omamental fish and foregroun

Current situation of resources and problems in market development of omamental fish were investigated and analysed.

Feed additives such as astaxanthin, Vitamin E, oil, f3 -carotene and hormone have more or less influence on the total carotenoids content of aquarium fish surface.

The results showed the optimized SRAP-PCR system for ornamental crabapple was: Mg2+ 2.

In order to study the mutagenic effect of the 60Coγ irradiation treatment on ornamental crabapple,we selected four 60Coγ dose to irradiate one-year-old branch of \'Radiant\' crabapple(M.

Studies on the Biological Characteristics of Ornamental Crabapples Cultivars;