producers‚ habitats and nursery areas. 3. Biodiversity is higher in the bottom region than in the surface region of the ocean because of the greater variety of habitats and food sources. 4. Scientific investigation of poorly understood marine and freshwater aquatic systems is a research frontier. B. Marine systems provide a variety of ecological and economic services. Conservative estimates value their ecological services at $21 trillion per year with at least 3.5 billion people—more than half of
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Ornamental Fish Trading in India Submitted by- Group 4 Srinivas Hegde Chandni.C.S Sharon Barboza Yashovardhan Sinha Sneha Pujari Mohammed Zooheb Ornamental Fish Trading in India Introduction Keeping colourful and fancy fishes known as ornamental fishes‚ aquarium fishes‚ or live jewels is one of the oldest and most popular hobbies in the world. The growing interest in aquarium fishes has resulted in steady increase in aquarium fish trade globally. The ornamental fish trade with
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Technologies‚ was founded by two gentlemen‚ Alan Blake and Richard Crockett‚ with the objective to patent the idea of producing GloFish® genetically modified tropical zebra fish which would fluorescent all the time. Zebra danio fish are native to India. These fish are clear with stripes on them. The objective of these fluorescent fish is to identify water contamination. After further analysis‚ patenting this idea was not possible as these fishes where already been developed for research. As a result
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backwards as the wave of muscle contraction moves towards the posterior. While this is happening the anterior muscles‚ which have been contracted relax‚ their partners on the other side of the spine contract and the eel bends in the opposite direction. The fish produces thrust using this oscillation. wiggle wiggle Interestingly eels can swim backwards as well as forwards using this method of locomotion. This method of locomotion works for the eels lifestyle for a few reasons‚ eels can move quickly
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revealed in many different contexts. Learning about fishing and learning about different types of fish can be very exciting and interesting to many people. Trout is the most common freshwater fish. They are equal to any other of the sport fish and they stand at the top of the food chain in most rivers and streams where they live. Years ago‚ a successful angler was judged by how many of these popular fish he could catch at one time‚ but now the wise angler practises catch-and-release tactics so the
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that move readily from water to land and vice versa are often referred to as amphibious. The term aquatic can in theory be applied to animals that live in either freshwater or saltwater. However‚ the adjective marine is most commonly used for animals that live in saltwater‚ i.e. in oceans‚ seas‚ etc. Aquatic animals (especially freshwater animals) are often of special concern to conservationists because of the fragility of their environments. Aquatic animals are subject to pressure from overfishing
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less fish life than it used to. One estimate shows only one-tenth of the sharks‚ tuna‚ cod and other large predatory fish swim in the ocean. around the world. The loss of fish continues. Overfishing occurs when fish and other marine species are caught at a faster rate then they can reproduce. There is a high demand for fish. The commercial fishing industries use grill nets‚ purse seines and drift nets to catch their fish. However; this still leaves over 27 million tons of fish that
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Sharks are a group of fish characterized by a cartilaginous skeleton‚ five to seven gill slits on the sides of the head‚ andpectoral fins that are not fused to the head. Modern sharks are classified within the clade Selachimorpha (or Selachii) and are the sister group to the rays. However‚ the term "shark" has also been used for extinct members of the subclassElasmobranchii outside the Selachimorpha‚ such as Cladoselache and Xenacanthus. Under this broader definition‚ the earliest known sharks
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mainly on fish in streams and in rivers‚ as these are the areas in which most fish in Iowa are located. What rivers are in Iowa? There are many different rivers in Iowa but the main ones include the Mississippi‚ Missouri‚ Iowa‚ And the Des Moines River. All of which have many streams that runoff from them. With these bodies comes some of the best freshwater fishing in America. Whether you are trying to catch Trout‚ Catfish‚ Walleye‚ or bass there is somewhere in Iowa for you. Where Are The Fish? The
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References: ^ (2013) Tilapia farming pushed to lessen impact of climate change ^ (2012) Study predicts smaller fish due to climate change Aitken‚ A. et.al. 1982 Fish handling and processing Brummet‚ R.E. 1995 Environmental regulation of sexual maturation and reproduction in tilapia 2010 “Climate change and the fisheries sector” January-June 2010: Volume 12 Issue No.1-2. Retrieved: http:
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