Taxonomy of Finfish (1+2)

Choiloscyllium griseum Muller & Henle,1839

Classification

Phylum: Chordata

Class: Chondrichthyes

Subclass : Elasmobranchii

Order Orectolobiformes

Family : HEMISCYLLIIDAE:

Genera : Chiloscyllium griseum

Species : C. griseum

Key character used for the identification of the order Orectolobiforme

• Head and body depresse
• Mouth terminal
• Spiracle large
• Enlarged fang like teeth

Key character used forthe identification of the family HEMISCYLLIIDAE- Bamboo sharks

• Small sharks.
• Trunk cylindrical or moderately depressed, precaudal tail cylindrical and somewhat longer than trunk
• Spiracles very large and located behind and below eyes;
• Nostrils with barbels, nasoral grooves, and circumnarial grooves present
• Mouth small, nearly transverse, and well in front of eyes;
• Second dorsal fin about as large as the first and of similar shape;
• Anal fin moderately large, very low, broad and rounded, with its origin well behind the second dorsal base and its base separated by a notch from the caudal fin;

Key character used for the identification of the genera Chiloscyllium griseum

• Nostrils subterminal on snout;
• eyes and supraorbital ridges hardly elevated;
• preoral snout long, mouth closer to eyes than snout tip;
• no black hood on head or large
• dark spot or spots on sides of body above pectoral fins

Key character used for the identification of the species C. griseum

• Body and tail moderately slender to relatively stout; length of anal fin considerably
• shorter than hypural caudal-fin lobe
• Ground colour of body light without light spots,with or without dark transverse spots or bands
• Dorsal fins smaller than pelvic fins, dorsals without projecting free rear tips