Freshwater crayfish is an appreciated delicacy in Northern Europe. High demand on noble crayfish Astacus astacus in neighbouring countries has stimulated Estonian fish farmers to build crayfish farms with the aim to produce crayfish for export. On the most enthusiastic period in mid-2000s 5-8 ...

Various forms of intensive aquaculture are gradually expanding in the Czech Republic, particularly recirculating aquaculture systems (RAS). The aim of the paper is to draw attention to the most common problems and the possibilities of ensuring the welfare of fish reared in the RAS. This is mainly...

Condition for successful intensive fish farming in the recirculating aquaculture system (RAS) is to create optimal living conditions for the kept species and age category of fish. The priority is to ensure the required water quality (temperature, dissolved oxygen content, pH, content of nitrogen...

The occurrence of noble crayfish in the Bolevec pond system (Czech Republic, Western Bohemia) was studied in 2010. Three methods were used - manual searching for specimens, application of traps, and visual control at night using light. Noble crayfish was found in six of the seven monitored ponds....

Addressing the health issue in fish farming in RAS requires, in addition to treatment and safety for fish, safety for the RAS cleaning system, especially nitrifying bacteria on biological filters. Products or substances which satisfy these requirements in practice are not authorised medicinal...

Recirculation systems of Danish type are used only shortly in the Czech Republic, but with respect to the current trend in aquaculture development (problems with high-quality water available for salmonid fish breeding, growing energy prices and strict regulations for exploitation of water...

An experimental breeding of signal juvenile crayfish in the 3rd stage of development was carried out in hatching and breeding apparatuses in 1999 and 2001. In 1999, altogether 715 juvenile crayfish were yielded from one apparatus. This means 119.2 and 2979.2 juveniles per one female and one square...

The experiment were carried out in four ponds at Fish farm Nové Hrady s.r.o. Two monoculture techniques of pond 0+ perch rearing were compared. In the first treatment, prey fish, topmouth gudgeon (Pseudorasbora parva, Temninck & Schlegel, 1842) was stocked into two ponds in the middle of June. In...

This journal is written by different authors and intended for veterinarians, aquaculturists, fish hobbyists, fish pond owners, fish breeders, veterinary students, scientists and practitioners. Topics covered are: interest of Czech fish industry in new information as reflected in the questionnaire...

The authors present a review of general rules and current practical recommendations for use of veterinary medicinal products and other veterinary products in fish. Particular overview shows the veterinary medicinal products authorized in the Czech Republic and in the EU member states for legal use...