Special animal几个特别的动物介绍.ppt

How do fish breed the next generation ？ How do the fish protect their eggs? mouthbreeder Arowana betta pugnax Mbuna astatotilapia burtoni coconut crab (Birgus latro ) Tree climb Husk rip off Pore bang White flesh turn around of the coconut pull out Coconut crab/thief crab Hermit crab to live in the burrows 1m, 4.1kg, 40years 10leds an?abdomen Diet: organic materials, dead animals,and other coconut crabs Distribution:Indian Ocean?and the central?Pacific Ocean back axolotl Healing ability regeneration 再生 limb,less vital parts of their brains accept transplants from other individuals including eyes and parts of the brain—restoring these alien organs to full functionality Suninam toad Pipa pipa Linnaeus * Welcome to the Animal World. two weeks ago Suninam toadSuninam toad Pipa pipa Linnaeus Some fish, like the California sheephead, are hermaphrodites雌雄同体, having both testes and ovaries either at different phases in their life cycle or, as in hamlets, have them simultaneously. Over 97% of all known fish are oviparous卵生的, that is, the eggs develop outside the mothers body. Examples of oviparous fish include salmon, goldfish, cichlids, tuna, and eels. In the majority of these species, fertilisation 受精takes place outside the mothers body, with the male and female fish shedding their gametes 配子（生殖细胞）into the surrounding water. However, a few oviparous fish practice internal fertilization, with the male using some sort of intromittent organ to deliver sperm into the genital opening of the female, most notably the oviparous sharks, such as the horn shark, and oviparous rays, such as skates. In these cases, the male is equipped with a pair of modified pelvic fins known as claspers. Marine fish can produce high numbers of eggs which are often released i