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Characteristics of All Fish ... 1. They are ectothermic, aquatic vertebrates. 2. Their skin is generally covered with scales. 3. Their limbs are modified into fins for swimming.
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www.ecnca.org/Animals/Fish/Fish_Characteristics.htm
www.ecnca.org/Animals/Fish/Fish_Characteristics.htm
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Fish are vertebrate animals, that is, they all have a vertebral column or ‘spine’. There are two main groups of fish, bony fish (Teleosts) and cartilaginous fish (Elasmobranchs). As the common names imply, the skeletons of teleosts are made of bone while the elasmobranchs have cartilaginous skeletons.
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ezinearticles.com/?Biology---Characteristics-of-Fish---...
ezinearticles.com/?Biology---Characteristics-of-Fish---An-Introduction&id=481224
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Characteristics of Fish, an Introduction. Notes & biological drawings on fish, anatomy, swimming, breathing. Biology teaching resources by D G Mackean ... ; Characteristics of Fish Background Article...
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www.biology-resources.com/fish.html
www.biology-resources.com/fish.html
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fish. stickleback...
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www.biology-resources.com/drawing-fish-shark.html
www.biology-resources.com/drawing-fish-shark.html
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Fish are the most primitive vertebrates to posses ; adaptive immune system ; (possession of lymphocytes, Ig, MHC and TCR) ; ... Fish immune system is simple and undifferentiated relative to those of mammals ; ... Fish immune responses are profoundly affected by environmental temperature ;
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www.soi.wide.ad.jp/class/20030032/slides/05/3.html
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Classification of Fish ... Fish are classified according to the material which makes up their skeletons. For example, sharks, skates and rays belong to a group called cartilaginous fish because their skeletons are composed entirely of cartilage. ... Bony fish eyes lack both of these characteristics.
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www.seaworld.org/aquademics/tetra/all_about_fish.htm
www.seaworld.org/aquademics/tetra/all_about_fish.htm
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Offshore, in abyssal areas and in littoral areas, there exist fish communities of their own characteristics. Especially in rocky littoral areas, complex and stable fish communities,mainly composed of Cichlidae, have developed, where each species has its own food habitat and they coexist with complex species interactions.
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jinrui.zool.kyoto-u.ac.jp/ChimpHome/Mahale/Fish.html
jinrui.zool.kyoto-u.ac.jp/ChimpHome/Mahale/Fish.html
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Many farmed fish and shellfish are vulnerable to disease, infection and poor performance from physiological stress. These factors have a significant effect on the economic performance of ... Their characteristics will be used as identifiers (markers) for selective breeding of disease and/or stress-resistant individuals.
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ec.europa.eu/research/fp6/ssp/aquafirst_en.htm
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Stream-habitat characteristics were related to fish-community degradation at three very different stream reaches in the Trinity River Basin. The reaches were chosen to reflect major differences in environmental settings, flow conditions, land uses, and stream biota.
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pubs.usgs.gov/circ/circ1171/html/streamhab.htm
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