Live Fish Trade ... The live food fish trade is a global system that links fishing communities with markets, primarily in Hong Kong and mainland China... Consumer demand Within the live food trade there are certain types of fish demanded more often by consumers, particularly smaller and medium-sized fish... According to the book While Stocks Last: The Live Reef Food Fish Trade consumer demand has caused the fish captured on coral reefs to be the most valued fish in the trade...
Fish ... Commercial and subsistence fishers hunt fish in wild fisheries (see fishing) or farm them in ponds or in cages in the ocean (see aquaculture)... Fish have had a role in culture through the ages, serving as deities, religious symbols, and as the subjects of art, books and movies...
Vision In Fishes ... The ratio of rods to cones depends on the ecology of the fish species concerned, e.g., those mainly active during the day in clear waters will have more cones than those living in low light environments...
Fish Farming ... There is an increasing demand for fish and fish protein, which has resulted in widespread overfishing in wild fisheries... However, farming carnivorous fish, such as salmon, does not always reduce pressure on wild fisheries, since carnivorous farmed fish are usually fed fishmeal and fish oil extracted from wild forage fish... The global returns for fish farming recorded by the FAO in 2008 totalled 33.8 million tonnes worth about $US 60 billion...
Fish Diseases And Parasites ... Specific defences are specialised responses to particular pathogens recognised by the fish's body, that is adaptative immune responses. In recent years, vaccines have become widely used in aquaculture and ornamental fish, for example vaccines for furunculosis in farmed salmon and koi herpes virus in koi...
Mercury In Fish ... The presence of mercury in fish can be a health issue, particularly for women who are or may become pregnant, nursing mothers, and young children... This results in the bioaccumulation of mercury, in a buildup in the adipose tissue of successive trophic levels: zooplankton, small nekton, larger fish etc... Anything which eats these fish within the food chain also consumes the higher level of mercury the fish have accumulated...
Pet ... In many locations, animals that are considered pets by their owners but are legally classified as livestock, including horses, pigs, camelids, and fowl may be banned from being kept within the city limits or restricted to property of a certain larger size. The cities of Berkeley, California, and Boulder, Colorado, have passed laws stating that people who have pets do not "own" them; rather, they are the pet's "guardian."...
Fish Anatomy ... The caudal peduncle is the narrow part of the fish's body to which the caudal or tail fin is attached. The hypural joint is the joint between the caudal fin and the last of the vertebrae...
Recreational Fishing ... Other devices, commonly referred to as terminal tackle, are also used to affect or complement the presentation of the bait to the targeted fish...
Sustainable Seafood ... Nonprofit groups addressing seafood sustainability include the Marine Stewardship Council, Monterey Bay Aquarium, Oceana, John G. Shedd Aquarium and Greenpeace...
Cleaner Fish ... The symbiosis does not break down because the abundance of these parasites varies significantly seasonally and spatially, and the overall benefit to the larger fish outweighs any cheating on the part of the smaller... Mimicry Many cleaner fish have a distinctive combination of a long narrow body, a longitudinal stripe, a blue colour, and small size... "Convergent signalling among cleaners, using size, stripes and colour, should facilitate their recognition by fish clients." The sabre-toothed blenny Aspidontus taeniatus is a blenny that mimics the ritualised dance the cleaner wrasse makes when passing fish swim by...
Scale (anatomy) ... They come in two forms: Cycloid scales have a smooth outer edge, and are most common on fish with soft fin rays, such as salmon and carp... Ctenoid scales have a toothed outer edge, and are usually found on fish with spiny fin rays, such as bass and crappie...
Fishkeeping ... In the tropics, tropical fish can be kept in garden ponds, but in the temperate zone species such as goldfish, koi, and orfe work better... Marine aquaria can be exceedingly beautiful, due to the attractive colors and shapes of the corals and the coral reef fish they host... Temperate zone marine fish are not as commonly kept in home aquaria, primarily because they do not thrive at room temperature...
Cat ... Cats are similar in anatomy to the other felids, with strong, flexible bodies, quick reflexes, sharp retractable claws, and teeth adapted to killing small prey. As crepuscular predators, cats use their acute hearing and ability to see in near darkness to locate prey...
Fishing Industry ... The commercial activity is aimed at the delivery of fish and other seafood products for human consumption or as input factors in other industrial processes... Commercial sector The commercial sector of the fishing industry comprises the following chain: Commercial fishing and fish farming which produce the fish Fish processing which produce the fish products Marketing of the fish products World production Fish are harvested by commercial fishing and aquaculture... According to the Food and Agriculture Organization (FAO), the world harvest in 2005 consisted of 93.3 million tonnes captured by commercial fishing in wild fisheries, plus 48.1 million tonnes produced by fish farms...
Fish Locomotion ... Body/caudal fin propulsion There are five groups that differ in the fraction of their body that is displaced laterally : Anguilliform locomotion In some long, slender fish – eels, for example – there is little increase in the amplitude of the flexion wave as it passes along the body... Sub-carangiform locomotion Here, there is a more marked increase in wave amplitude along the body with the vast majority of the work being done by the rear half of the fish... Ocean sunfish, for example, have a completely different system, and many small fish use their pectoral fins for swimming as well as for steering and dynamic lift...
Fish (food) ... The modern English word for fish comes from the Old English fisc (plural: fiscas) which was pronounced as it is today... There are issues with fish contaminated with heavy metals such as mercury and lead, or by toxic chemicals such as those containing chlorine or bromine, dioxins or PCBs... Mercury Fish products have been shown to contain varying amounts of heavy metals, particularly mercury and fat-soluble pollutants from water pollution...
Bird ... Modern birds are characterised by feathers, a beak with no teeth, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a lightweight but strong skeleton. All living species of birds have wings—the now extinct flightless moa of New Zealand were the only exception...