Fogfighters Hungary

Top-Ten Countries visiting Fogfighters Hungary

1	United States
2	China
3	Viet nam
4	Russian Federation
5	France
6	Hungary
7	unknown
8	Ukraine
9	Canada
10	United Kingdom
11	Germany
12	Netherlands
13	Poland
14	Italy
15	Taiwan, Province of China
16	Seychelles
17	Australia
18	Romania
19	Indonesia
20	India
21	Thailand
22	Sweden
23	Brazil
24	Japan
25	South Africa
26	Lithuania
27	Argentina
28	Spain
29	Iran, Islamic Republic of
30	Chile
31	Luxembourg
32	Turkey
33	Moldova, Republic of
34	Korea, Republic of
35	Belarus
36	Malaysia
37	Venezuela
38	Switzerland
39	Singapore
40	Colombia
41	Hong Kong
42	Mexico
43	Mongolia
44	Czech Republic
45	Belize
46	Greece
47	Honduras
48	Estonia
49	Latvia
50	Bulgaria
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Fish Guide

The Guppy (Poecilia reticulata) is one of the most popular freshwater aquarium fish species in the world.

A fish is a water-dwelling vertebrate with gills that doesn't change form, as amphibians do, during its life. Most are cold-blooded, though some (such as some species of tuna and shark) are warm-blooded. There are over 29,000 species of fish, making them the most diverse group of vertebrates. Taxonomically, fish are a paraphyletic group whose exact relationships are much debated; a common division is into the jawless fish (class Agnatha, 75 species including lampreys and hagfish), the cartilaginous fish (class Chondrichthyes, 800 species including sharks and rays), with the remainder classed as bony fish (class Osteichthyes).

Fish come in different sizes, from the 16 m (51 ft) whale shark to a 8 mm (just over ¼ of an inch) long stout infantfish. Many types of aquatic animals named "fish" are not true fish, and in the case of animals such as jellyfish and cuttlefish, are not even vertebrates. Other marine creatures that have in the past been considered fish, like dolphins, are actually mammals.

Although most fish are exclusively aquatic and cold-blooded, there are exceptions to both cases. Fish from a number of different groups have evolved the capacity to live out of the water for extended periods of time. Of these amphibious fish some such as the mudskipper can live and move about on land for up to several days. Also, certain species of fish maintain elevated body temperatures to varying degrees. Endothermic teleosts (bony fishes) are all in the suborder Scombroidei and include the billfishes, tunas, and one species of "primitive" mackerel (Gasterochisma melampus). All sharks in the family Lamnidae – shortfin mako, long fin mako, white, porbeagle, and salmon shark – are known to have the capacity for endothermy, and evidence suggests the trait exists in family Alopiidae (thresher sharks). The degree of endothermy varies from the billfish, which warm only their eyes and brain, to bluefin tuna and porbeagle sharks who maintain body temperatures elevated in excess of 20 °C above ambient water temperatures. See also gigantothermy. Endothermy, though metabolically costly, is thought to provide advantages such as increased contractile force of muscles, higher rates of central nervous system processing, and higher rates of digestion.

Fish are an important source of food in many cultures. Other water-dwelling animals such as mollusks, crustaceans, and shellfish are often called "fish" when used as food. For more details, see Fish food.