Characteristic of fish reviews
Characteristic of fish
Fish are aquatic vertebrates that have vertebral column called spine. A classic fish is a torpedo shaped. The fish contains head containing a brain and sensory organs, a trunk with a muscular wall surrounding a cavity with the internal organs and a muscular post-anal tail. The following are the general characteristic that all the fish species posses: read here: http://www.animalsworlds.com/characteristic-of-fish.html
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. Tropical fish, which are members of the fish group that are represented in the Aquademics™ aquarium, are called bony fish (scientific name Osteichthyes) because they have skeletons made of bone. All of the facts and information for the Aquademics™ program, as well as the material in the Aquademics™ Parent and Teacher's Guide, will focus on the bony fish group read here: http://www.seaworld.org/aquademics/tetra/all_about_fish.htm
Characteristics of Fish, an Introduction
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What are the characteristics of a fish?
Fish are exothermic .
Aquatic.
Vertebrates
Their skin is covered with scales.
Their limbs are also modified into fins for swimming purposes.
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Biology - Characteristics of Fish - An Introduction
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. The elasmobranchs comprise sharks, rays and dogfish which differ from teleosts in many respects. The teleosts are far more numerous, with a greater diversity of species than the elasmobranchs. read here: http://ezinearticles.com/?Biology---Characteristics-of-Fish---An-Introduction&id=481224
Fish facts and Fish trivia
A fish is an animal which lives and breathes in water. All fish are vertebrates (have a backbone) and most breathe through gills and have fins and scales. Fish make up about half of all known vertebrate species.
What is a person who studies fish called : An ichthyologist.
How are fish identified : A combination of the number of fins and their characteristics, scale counts, general features, colour, maximum length and distribution are used.
Difference between male and female fish - In some species the males and females have different shaped bodies or different colouring; in other species there is no visible difference.
How fishes breathe: Some fish have lungs and breathe air, but most breathe through gills. Gills are made up of thin sheets of tissue richly supplied with blood vessels. As water passes over them dissolved oxygen is absorbed into the blood and waste products such as carbon dioxide pass out into the water. The gills are protected by a large bony plate called an operculum.
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