HISAYAMA Fish Farm was established in 1975. We are greatly indebted to the tireless co-operation of Mr. Satou Kunio for some 15 years since foundation up to the year when he retired from this business due to his illness. Mr. Satou belongs to the top management of former Japan Fish Lover Association (former ZNA) as a key member of the Association?fs appreciation division, as well as one of the most distinguished experts in Koi in Japan. We have been farming Koi with an objective to produce fancy Koi which will win championship in the national competitive show in Japan. We have now started to market numerous high-grade fancy Koi via the Internet.

Fish and shellfish. The best way to buy fish is fresh and unfrozen. Again, most of the fish in supermarkets comes from Fish Farms where it is fed with artificial substances, and this fish cannot be used in healthy recipes. Pink salmon and other popular kinds of fish will most likely come from a Fish Farm. Shellfish is a more healthy choice, since shrimp, for example, does not live in chemically polluted water. When you boil mussels, discard those that do not open. Incidentally, I did have a business plan (for my Integrated Fish Farm) startup that I took weeks to painstakingly prepare, going out to research various aspects, and getting guidelines from banks towards securing equity investment under the Small Medium Enterprises Investment Scheme(SMEIS). My experiences over a two year period in this regard, convince me of the accuracy of the opinions I have expressed above. Visit site to learn more about the business plan I wrote for my Integrated Fish Farm. In this kind of systems fish production per unit of surface can be increased at will, as long as sufficient oxygen, fresh water and food are provided. Because of the requirement of sufficient fresh water, a massive water purification system must be integrated in the Fish Farm. A clever way to achieve this is the combination of hydroponic horticulture and water treatment, see below. The exception to this rule are cages which are placed in a river or sea, which supplements the fish crop with sufficient fresh water. Environmentalists object to this practice.

The cost of inputs per unit of fish weight is higher than in extensive farming, especially because of the high cost of fish food, which must contain a much higher level of protein (up to 60%) than, e.g., cattle food and a balanced amino acid composition as well. This frequently is offset by the lower land costs and the higher productions which can be obtained due to the high level of input control. Essential here is aeration of the water, as fish need a sufficient oxygen level for growth. This is achieved by bubbling, cascade flow or liquid oxygen. Catfish, Clarias ssp. can breathe atmospheric air and can tolerate much higher levels of pollutants than, e.g., trout or salmon, which makes aeration and water purification less necessary and makes Clarias species especially suited for intensive fish production. In some Clarias farms about 10% of the water volume can consist of fish biomass.