Cardinal tetra
A species of Neon tetras, Also known as Neon, Neon tetra Scientific name : Paracheirodon axelrodi Genus : Neon tetras
Cardinal tetra, A species of Neon tetras
Also known as:
Neon, Neon tetra
Botanical name: Paracheirodon axelrodi
Genus: Neon tetras
Content
Description
Photo By úlfhams_víkingur , used under CC-BY-2.0 /Cropped and compressed from original 
Description
The cardinal tetra has bright red ventral parts and an iridescent blue line that runs horizontally down the length of its body. The characteristic iridescence of this and related fishes, such as the neon tetra, is a structural color, caused by refraction of light within guanine crystals that develop within special cells called iridocytes in the subcutaneous layer. The exact shade of blue seen will depend on the viewing angle of the aquarist relative to the fish - if the aquarist changes viewpoint so as to look at the fish more from below, the colour will change hue, becoming more deeply sapphire blue and even indigo. Change the viewpoint to one above the fishes, however, and the color becomes more greenish. Cardinal tetras appear to grow larger in captivity than they do in the wild. They have a large stomach and small gut.
AdultSize
5 cm
* Disclaimer: The judgment on toxicity and danger is for reference only. We DO NOT GUARANTEE any accuracy of such judgment. Therefore, you SHALL NOT rely on such judgment. It is IMPORTANT TO SEEK PROFESSIONAL ADVICE in advance when necessary.
Scientific Classification
Phylum
Chordates Class
Fish Order
Characins Family
Characids Genus
Neon tetras Species
Cardinal tetra 
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