Introduction
- Digestive system consists of alimentary canal and its associated glands.
- The digestive tube also contains numerous intramural glands which provide the tube by lubricating mucus, enzymes, water etc.
- While extramural glands are liver, pancreas and gall bladder
- On the basis of feeding habits, the fishes are categorized as follows:
- Herbivorous
- Carnivorous
- Omnivorous
- Plankton Feeder or Detrivorous