軟骨魚綱(Chondrichthyes)即係軟骨嘅魚,包含鯊魚、鯆、魟三個類別嘅動物。
軟骨魚 | ||||||||||
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大白鯊,Carcharodon carcharias | ||||||||||
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軟骨魚綱動物特點在於,全身只有軟骨,冇真正嘅骨。佢哋冇魚鰾,用肝臟來控制浮沈。
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