• Penaeus is commonly known as ‘Prawn’.

• Penaeus lives in marine habitat.

• Body is covered with cuticle.

• Body is formed of 19 segments.

• Body is divisible into cephalothorax and abdomen.

• Cephalothorax is formed of 13 segments and Abdomen is formed of 6 segments.

• Head bears a pair of stalked compound eye and 5 pairs of cephalic appendages.

• Thorax consists of 3 pair maxillipedes and 5 pairs of walking legs.

• 6 pairs of abdominal appendages are called Pleopods.

• Green gland for excretion.

• Gills are the respiratory organ.