Fisher Birds
27.9M10,000+
Casual
3.0
Fisher Birds
Fish are the gill-bearing aquatic craniate animals that lack limbs with digits. They form a sister group to the tunicates, together forming the olfactores. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Tetrapods emerged within lobe-finned fishes, so cladistically they are fish as well. However, traditionally fish are rendered paraphyletic by excluding the tetrapods (i.e., the amphibians, reptiles, birds and mammals which all descended from within the same ancestry). Because in this manner the term "fish" is defined negatively as a paraphyletic group, it is not considered a formal taxonomic grouping in systematic biology. The traditional term pisces (also ichthyes) is considered a typological, but not a phylogenetic classification.
The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than just the prey of arthropods.
Most fish are ectothermic ("cold-blooded"), allowing their body temperatures to vary as ambient temperatures change, though some of the large active swimmers like white shark and tuna can hold a higher core temperature.Fish are abundant in most bodies of water. They can be found in nearly all aquatic environments, from high mountain streams (e.g., char and gudgeon) to the abyssal and even hadal depths of the deepest oceans (e.g., gulpers and anglerfish). With 33,600 described species, fish exhibit greater species diversity than any other group of vertebrates.
Fish are an important resource for humans worldwide, especially as food. Commercial and subsistence fishers hunt fish in wild fisheries (see fishing) or farm them in ponds or in cages in the ocean (see aquaculture). They are also caught by recreational fishers, kept as pets, raised by fishkeepers, and exhibited in public aquaria. Fish have had a role in culture through the ages, serving as deities, religious symbols, and as the subjects of art, books and movies.
Fish do not represent a monophyletic group, and therefore the "evolution of fish" is not studied as a single event.Early fish from the fossil record are represented by a group of small, jawless, armored fish known as ostracoderms. Jawless fish lineages are mostly extinct. An extant clade, the lampreys may approximate ancient pre-jawed fish. The first jaws are found in Placodermi fossils. The diversity of jawed vertebrates may indicate the evolutionary advantage of a jawed mouth. It is unclear if the advantage of a hinged jaw is greater biting force, improved respiration, or a combination of factors.
Fish may have evolved from a creature similar to a coral-like sea squirt, whose larvae resemble primitive fish in important ways. The first ancestors of fish may have kept the larval form into adulthood (as some sea squirts do today), although perhaps the reverse is the case.The term "fish" most precisely describes any non-tetrapod craniate (i.e. an animal with a skull and in most cases a backbone) that has gills throughout life and whose limbs, if any, are in the shape of fins.Unlike groupings such as birds or mammals, fish are not a single clade but a paraphyletic collection of taxa, including hagfishes, lampreys, sharks and rays, ray-finned fish, coelacanths, and lungfish. Indeed, lungfish and coelacanths are closer relatives of tetrapods (such as mammals, birds, amphibians, etc.) than of other fish such as ray-finned fish or sharks, so the last common ancestor of all fish is also an ancestor
자세히보기
새로운 기능
version 1.0
정보
- ID:com.windydev.fisherbirdshungryangryocean
- 범주:Casual
- 업데이트 됨:2018-01-17
- 버전:1.0
- 요구:Android 4.0
비슷하다 Fisher Birds
당신도 좋아할 수도 있습니다
- Farm City: Farming & Building4.5211.4M
- Puppy Town - Merge & Win4.385.4M
- 공주 패션 게임 그리고 메이크업 게임3.689.1M
- 공주 패션 살롱4.140.3M
- Bubble Shooter4.337.5M
- Builder Game (빌더 게임)4.049.5M
- Chhota Bheem Speed Racing Game4.163.2M
- 쇼핑몰 걸4.0141.8M
- Bubble Shooter4.543.6M
- Line Color 3D4.0115.0M
- 미니 블록 크래프트4.2144.2M
- 마이토킹톰 프렌즈4.2140.2M
- Candy Crush Soda Saga4.696.0M
- Coin Master4.775.9M
- Candy Fever - 매치 3 게임4.532.7M
- Kiss Kiss: Spin the Bottle4.6134.7M
- 콩알 만 발가락 노을4.370.8M
- Lucky Toss 3D - Toss & Win Big4.594.3M
- Candy Crush Saga4.491.1M
- mGamer – Earn Money, Gift Card3.836.4M