http://www.bigdawg-dir.com/Aquariums_and_Fish/Pet and Animal Directory consisting of common animals and pets from around the world. Quality links and resources are contained inside the Big Dawg Pet and animal directory.Add your links today and help us grow to be the biggest on the web. Fish limbless aquatic vertebrate animal with fins and internal gills. There are three living classes of fish: the primitive jawless fishes, or Agnatha the cartilaginous fishes, or Chondrichthyes and the bony type fishes, or Osteichthyes. These groups, although quite different from one another anatomically, have certain common features related to their common evolutionary origins or to their aquatic way of life. Fish were the earliest vertebrates and presumably evolved from a group of aquatic lower chordates the terrestrial vertebrates evolved from fishes.http://www.desertcoralaquatics.comDesertcoralaquatics.com is a FULL LINE aquarium pet supply retailer, specializing in pet supplies for tropical fish and aquariums.Thu, 25 Oct 2007 02:05:33 GMT