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Animals, typically fish, kept in fish tanks produce waste from excrement and respiration. Another source of waste is uneaten food or plants and fish which have died. These waste products collect in the tanks and contaminate the water.
This 16th-century fish stall shows many traditional fish products. The term fish processing refers to the processes associated with fish and fish products between the time fish are caught or harvested, and the time the final product is delivered to the customer. Although the term refers specifically to fish, in practice it is extended to cover ...
Freshwater aquarium. A freshwater aquarium is a receptacle that holds one or more freshwater aquatic organisms for decorative, pet-keeping, or research purposes. Modern aquariums are most often made from transparent glass or acrylic glass. Typical inhabitants include fish, plants, amphibians, and invertebrates, such as snails and crustaceans.
Cuboid aquaria are also known as fish tanks or simply tanks, while bowl-shaped aquaria are also known as fish bowls. Size can range from a small glass bowl, a few liters in volume, to immense public aquaria of thousands of liters. Specialized equipment maintains appropriate water quality and other characteristics suitable for the aquarium's ...
Ikejime. Tekagi (手鉤), the tool that is used for performing ikejime. Ikejime (活け締め) or ikijime (活き締め) is a method of killing fish that maintains the quality of its meat. [1] The technique originated in Japan, but is now in widespread use. It involves the insertion of a spike quickly and directly into the hindbrain, usually ...
Fish are sometimes maintained in inadequate conditions by inexperienced aquarists who often keep too many fish in one tank, or add fish too quickly into an immature aquarium, killing many of them. This has given the hobby a bad reputation among some animal welfare groups, such as PETA , who accuse aquarists of treating aquarium fish as cheap ...
Aquaponics is a food production system that couples aquaculture (raising aquatic animals such as fish, crayfish, snails or prawns in tanks) with hydroponics (cultivating plants in water) whereby the nutrient-rich aquaculture water is fed to hydroponically grown plants.
Boti. Chulesi, Boti, dao, da, aruvamanai, chulesi, pavshi, vili, morli or pirdai is a cutting instrument, [1] most prevalent in Nepal, Maharashtra, South India, Bihar, Pakistan and the Bengal region, [2] Bihar, Tripura, the Barak Valley of Assam. It is a long curved blade that cuts on a platform held down by the foot.