Bony Fish Facts

Most of the worlds fish species are categorized into two types: bony fish and cartilaginous fish. In simple terms, a bony fish (Osteichthyes)  is one whose skeleton is made of bone, while a cartilaginous fish (Chondrichthyes) has a  skeleton made of soft, flexible cartilage. A third type of fish, including eels and hagfish, is the group known as Agnatha, or jawless fish.   The cartilaginous fish include sharks,  skates,  and  rays.  Virtually all other fish fall into the class of bony fish which includes over 50,000 species. Fast Facts: Bony Fish Scientific Name: Osteichthyes, Actinopterygii, SacropterygiiCommon Names: Bony fish, ray-finned and lobe-finned fishesBasic Animal Group: FishSize: From below a half inch to 26 feet longWeight: Well under an ounce to 5,000 poundsLifespan: A few months to 100 years or longer  Diet:  Carnivore, Omnivore, HerbivoreHabitat: Polar, temperate, and tropical ocean waters as well as freshwater environmentsConservation Status: Some species are Critically Endangered and Extinct. Description All bony fishes have sutures in their neurocranium and segmented fin rays derived from their epidermis. Both bony fish and cartilaginous fish breathe through gills, but bony fish also have a hard, bony plate covering their gills. This feature is called an operculum. Bony fish may also have distinct rays, or spines, in their fins. And unlike cartilaginous fish, bony fish have swim or gas bladders to regulate their buoyancy. Cartilaginous fish, on the other hand, must swim constantly to stay afloat.     Mint Images/Getty Images Species Bony fish are considered to members of the class  Osteichthyes, which is subdivided into two main types of bony fish: Ray-finned fishes, or ActinopterygiiLobe-finned fishes, or Sarcopterygii, which includes the coelacanths and lungfishes. The subclass Sarcopterygii is made up of about 25,000 species, all characterized by the presence of enamel on their teeth. They have a central axis of bone that acts as a unique skeletal support for fins and limbs, and their upper jaws are fused with their skulls. Two major groups of fishes fit under the Sarcopterygii: the Ceratodontiformes (or lungfishes) and the Coelacanthiformes (or coelacanths), once thought to be extinct. Actinopterygii includes 33,000 species in 453 families. They are found in all aquatic habitats and range in body size from under a half inch to over 26 feet long. The Ocean sunfish weighs up to over 5,000 pounds. The members of this subclass have enlarged pectoral fins and fused pelvic fins.  Species include Chondroste, which are primitive ray-finned bony fishes; Holostei or Neopterygii, the intermediate ray-finned fishes like sturgeons, paddlefish, and bichirs; and Teleostei or Neopterygii, the advanced bony fishes such as herring, salmon, and perch.   Habitat and Distribution Bony fish can be found in waters all around the world, freshwater and saltwater both, unlike cartilagenous fish who are found only in salt waters.  Marine bony fish live in all the oceans, from shallow to deep waters, and in both cold and warm temperatures. Their lifespans range from a few months to over 100 years. An extreme example of bony fish adaptation is the Antarctic icefish, which lives in waters so cold that antifreeze proteins circulate through its body to keep it from freezing. Bony fish also comprise virtually all freshwater species living in lakes, rivers, and streams.  Sunfish, bass, catfish, trout, and pike are examples of bony fish, as are the freshwater tropical fish that you see in aquariums.   Other species of bony fish include: TunaAtlantic codRed lionfishGiant frogfishSeahorsesOcean sunfish Rodrigo Friscione/Getty Images Diet and Behavior A bony fishs prey depends on the species but may include plankton, crustaceans (e.g., crabs), invertebrates (e.g., green sea urchins), and even other fish. Some species of bony fish are virtual omnivores, eating all manner of animal and plant life.   Bony fish behavior varies greatly, depending on the  species. Smaller bony fish swim in schools for protection. Some like the tuna swim continually while others (stonefish and flatfish) spend most of their time lying on the seafloor. Some such as morays only hunt at night; some like butterfly fishes do so during the day; and others are most active at dawn and dusk.   Reproduction and Offspring Some bony fish are born sexually mature or become mature shortly after birth; most mature within the first one to five years. The main reproduction mechanism is external fertilization. During the spawning season, females release hundreds to thousands of eggs in the water, and males release sperm and fertilize the eggs. Not all bony fish do lay eggs: Some are live-bearing. Some are hermaphrodites (the same fish has both male and female genitalia), and other bony fish switch genders over time. Some, like the seahorse, are oviparous, meaning the eggs are fertilized in the parent who feeds them from a yolk sac. Among seahorses, the male carries the offspring until they are born.   Evolutionary History The first fish-like creatures appeared over 500 million years ago. Bony fish and cartilaginous fish diverged into separate classes about 420 million years ago. Cartilaginous species are sometimes seen as more primitive, and for good reason. The evolutionary appearance of bony fish eventually led to land-dwelling vertebrates with bony skeletons. And the gill structure of bony fish gill was a feature that would eventually evolve into air-breathing lungs. Bony fishes are therefore a more direct ancestor to humans.   Conservation Status Most bony fish species are classed as Least Concern by the International Union for Conservation of Nature (IUCN), but there numerous species that are Vulnerable, Near Threatened, or Critically Threatened, such as Metriaclima koningsi of Africa. Sources Bony and Ray-Finned Fishes. Endangered Species International, 2011.  Class Osteichthyes. The Biology Classroom of Mr. Pletsch. University of British Columbia, February 2, 2017.Hastings, Philip A., Harold Jack Walker, and Grantly R. Galland. Fishes: A Guide to Their Diversity. Berkeley, University of California Press, 2014.Konings, A. Metriaclima . The IUCN Red List of Threatened Species: e.T124556154A124556170, 2018.  koningsiMartin, R.Adam. Fathoming Geologic Time. ReefQuest Centre for Shark Research.Plessner, Stephanie. Fish Groups. Florida Museum of Natural History: Ichthyology.

Fracking Current State And Future - 948 Words

Energy has always been the driving force that help mankind developed. From the First Industrial Revolution, steam engine powered by coal was developed. Then the Second Industrial Revolution come with the development of combustor engine and petroleum. Today, oil has become an essential source of energy for production and our everyday life. The demand keep on increasing which lead to the growth in scale and quantity of oil production all over the world. It has led many companies to overlook the benefit of other stakeholder beside their traditional shareholder. And the result as many accident relate to companies cut corner to pursuit profit. Although, we have long realize the negative impact of oil and oil industry. But it is impossible to replace them with some other alternative in a short period. With that being said Fracking has appear to be a shiny star and reasonable solution for U.S in this near future. We will discuss fracking current state and future also as the potential ethic issue tag along with it. Modern fracking was first introduced in 1947, but it has not commercialized until 1990s (Manfreda, 2015). After almost seventy years of development, fracking technology has developed rapidly and become more efficient. But question about its safety has yet to be answer. Fracking is the process of drilling and injecting mixture of liquid, including water, sand and chemical, at high pressure into the well. This mixture will create fracture in the rock and release naturalShow MoreRelatedThe Invention Of Our Modern Day Fracking1299 Words   |  6 Pagescase of any treatment polluting an aquifer – not one.†(â€Å"Shooters-A Fracking History†). This statement may lead you to believe there is no need for concern, but there is a big pink elephant in the room. Arguments against these statements would prove futile, at a first glance, but understanding the true cost, to the environment and our safety could prove more valuable than the money earned. The beginnings of our modern day fracking process reside in a U.S. Patent No. 59,936, issued to a Col. EdwardRead MoreIs Fracking Safer : Wastewater Injections Cause Human Made Earthquakes, But The Risk Can Be Reduced1142 Words   |  5 PagesAnnotated Bibliography Arizona State University. (2016, September 22). Research finds way to make fracking safer: Wastewater injections cause human-made earthquakes, but the risk can be reduced. ScienceDaily. Retrieved February 24, 2017 from www.sciencedaily.com/releases/2016/09/160922150659.htm The Arizona State University effectively relays the information from a research done to evaluate the use of fracking techniques in relation to the Texas earthquakes experienced in May of 2012. The researchRead MoreGlobal Warming And The Negative Environmental Impacts1364 Words   |  6 Pagesdebated about topics surrounding global warming and human contribution is fracking. Fracking is the process of shooting a high pressure liquid into subterranean rocks in order for the gas to come out which is done usually to be able to sell gas at a cheaper price. Modern day fracking did not become popular until the 1990’s when a guy named George P. Mitchell combined hydraulic fracturing and horizontal drilling. Although fracking does make buying gas cheaper people forget to look at the negative impactsRead MoreThe Effects Of Fracking On Outside Oil1172 Words   |  5 PagesWorries with the earth have been up front in the United States. Particularly during the presidential race, numero us natural issues are at the bleeding edge of endless discussions. There is an accord between gatherings that residential vitality creation must keep on expanding, yet there are clashing assessments as to where that vitality generation ought to originate from. Should we utilize non-renewable assets or put resources into new and imaginative renewable vitality sources? Our reliance on outsideRead MoreFracking Affect The Community On A Local Level1434 Words   |  6 Pagesstove, and the electrical power that flow through homes share a common attribute: they are fueled by natural gas or oil, both of which are fundamental sources of energy in the US and are mined through the process of fracking. B.Hydraulic fracturing, more commonly known as fracking, is a method of oil and natural gas extraction used to release natural gas that can be converted into energy. A mixture of water, sand, and chemicals is injected into shale formations thousands of feet below the surfaceRead MoreFracking Of The United States1307 Words   |  6 Pages2014 Dr. Gray Final Paper Fracking in the United States Hydraulic fracking in the United States is a current environmental hazard that has to be addressed by the American people and by the federal government. Fracking in America has opened up millions of acres of lands that were once not economically viable to produce oil and gas. While the Bureau of land Management has paved the way for hydraulic fracturing on public lands, there is a need for retaliation. Fracking is a dirty method of extractingRead MoreFracking : The Gas Boom1352 Words   |  6 Pagescommonly known as â€Å"fracking†, is a term that many people may have heard about, but actually have very little knowledge on. Fracking is a topic that is highly controversial between people who work in the industry, scientists, and environmental professionals. Fracking has been around for a long time, but it’s only been in the past thirty years that it’s really taken off in what is known as the shale gas boom. As our sources of energy dwindle down it becomes important to consider our future and look intoRead MoreThe Economic Report On Fracking, Is It Worth It?1465 Words   |  6 PagesWeekly Economic Report Fracking, is it Worth it? Ron Withall Business 630, Dr. Lynn Reaser SUBJECT Our dependence on foreign oil and natural gas has created a vulnerability affecting our national security and economic stability. Up until this past decade there was an appreciable decline in our oil and natural gas production in the US and we were tied to world market price fluctuations. Oil prices and natural gas prices rose and fell based on OPEC’s and other large oil and natural gas producers’Read MoreFracking (Pro-Con)1159 Words   |  5 Pagesis a nightmare. Often the word ‘fracking’ itself raises a lot of concerns, protests, and controversies. Environmentalists and the general public who are not aware of the facts and statistics about fracking, what’s called the bigger picture, often tend to think that fracking is a major concern and its impact on environment and in the sector of public health is disturbing. While it is the responsibility of the citizens to analyze and understand the reality of fracking, it is also the duty of the government Read MoreFracking And The Public Health1230 Words   |  5 PagesHydraulic fracturing or fracking has become a concern both environmentally and in the public health sphere in Western Maryland. In analyzing these ideas, the environment and public health concerns intertwine in a discourse about the relationship on both power and knowledge. Fracking is a new issue for the state of Maryland to consider; therefore dominant narratives on this subject are still being developed and legitimized. Studies have been conducted in other regions around the world to analyze the

Digital Fortress Chapter 38 Free Essays

Hale stopped halfway to the Node 3 pantry and stared at Susan. â€Å"What’s wrong, Sue? You look terrible.† Susan fought her rising fear. We will write a custom essay sample on Digital Fortress Chapter 38 or any similar topic only for you Order Now Ten feet away, Hale’s monitor glowed brightly. â€Å"I’m†¦ I’m okay,† she managed, her heart pounding. Hale eyed her with a puzzled look on his face. â€Å"You want some water?† Susan could not answer. She cursed herself. How could I forget to dim his damn monitor? Susan knew the moment Hale suspected her of searching his terminal, he’d suspect she knew his real identity, North Dakota. She feared Hale would do anything to keep that information inside Node 3. Susan wondered if she should make a dash for the door. But she never got the chance. Suddenly there was a pounding at the glass wall. Both Hale and Susan jumped. It was Chartrukian. He was banging his sweaty fists against the glass again. He looked like he’d seen Armageddon. Hale scowled at the crazed Sys-Sec outside the window, then turned back to Susan. â€Å"I’ll be right back. Get yourself a drink. You look pale.† Hale turned and went outside. Susan steadied herself and moved quickly to Hale’s terminal. She reached down and adjusted the brightness controls. The monitor went black. Her head was pounding. She turned and eyed the conversation now taking place on the Crypto floor. Apparently, Chartrukian had not gone home, after all. The young Sys-Sec was now in a panic, spilling his guts to Greg Hale. Susan knew it didn’t matter-Hale knew everything there was to know. I’ve got to get to Strathmore, she thought. And fast. How to cite Digital Fortress Chapter 38, Essay examples