Biology of Finfish and Shellfish

Observation

Features	Grouper	Tuna	Barracuda	Sardine	Marine cat fish
Mouth	Terminal	Terminal	Terminal but lower jaw slightly larger	Terminal	Sub-terminal
Teeth	Pharyngeal teeth present. Incisor teeth in jaw	Premaxillary and Dentary	Canine and incisor teeth present	Absent	Cardiform and palatine teeth present
Gill rakers	Comb like hard and pointed	Hard	Hard	Numerous	Numerous
Stomach	Y- shaped	Y- shaped	I-shaped	U-shaped	U-shaped
Intestine	Short	Short	Straight	Coiled	Very long and coiled