Digestive parts of fish

a) Mouth

• Entry point of system.
• Carnivores mouth
• Have many teeth that point inwards.
• Not used for chewing.
• Used to capture and hold prey.
• Other fish
• Few or no teeth.

b) Tongue

• Helps move food around in the mouth.

c) Branchiospines

• Act as filters to capture small food from water as the fish swims.
• Part of the gill structure that helps fish swim.

d) Esophagus

• Short tube that connects mouth to stomach.
• Esophagus connects directly to intestines.

e) Stomach

• Organ where digestion begins.
• Some stomachs will expand greatly.
• Allows them to eat large quantities of food.
• Other stomachs are small that will accommodate small amounts of food.
• Some fish have almost no stomach.

f) Intestines

• Site of food digestion and nutrient absorption.

g) Anus

• Exterior opening of system.
• Unused food and wasted material is exited.