Fish are ancient water-dwelling creatures found all around the world. Fish are the world's oldest vertebrates. All fish breathe through gills, using the gills the oxygen from the water enters the fish's body. The first fish arrived around 5 million years ago, there is now over 24,000 species of fish populating the earth. Most fish have bony skeletons, but sharks and rays have skeletons made of cartilage. Fish eat other fish, bread, bits of food, and small prey. Also, some mother fish eat their babies,right after they are born.aThis is going to be a link to a wiki page. http://animals.nationalgeographic.com/animals/fish.html......national geogriphic Febuary 19, 2009

                                                                                FACTS ABOUT FISH

1.  Some types of fish can fly (glide) others can jump along the surface and others can even climb rocks.

2.The largest fish is the great whale shark which can get  fifty feet long .

3.The smallest fish is the Philippine goby that is less than 1/3 of an inch when fully grown.

4. Fish feel pain and tiredness just like mammals and birds.

5.Fish were here well long before dinosaurs roamed the earth.

6.It is estimated that there may still be over 15,000 fish species that have not yet been identified.

7.There are more species of fish than all the species of amphibians, reptiles, birds and mammals combined.

http://www.peteducation.com/article.cfm?c=16+2160&aid=586   Febuary 19 2009

 http://www.curriki.org/xwiki/bin/download/Coll_cmytko/Fishanatomydiagram/Fish-Anatomy.jpg

Most fish produce offspring by laying eggs.

It is estimated that there is still  over 15,000 fish species that have not yet been found..

Bailey, M; Burgess, P. Tropical Fishlopedia. Howell Books, New York, NY; 2000.

Burgess, P; Bailey, M; and Exell, A. A-Z of Tropical Fish. Howell, New York, NY; 1998.

Burgess, WE; Axelrod, HR; Hunziker III, RE. Dr. Burgess's Mini Atlas of Marine Aquarium Fishes. T.F.H. Publications, Neptune City, NJ; 1997.

Alderton, D. The Complete Guide to Tropical Aquarium Fish Care Howell Books, New York, NY; 1998.