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Tere is two types of fishes; one is herbivorous and another carnivorous and the digestive system of both are different.

* The typical digestive system starts from the mouth, followed by pharynx, followed by, esophagus then Gizzard, Stomach, followed by intestines and finally rectum.
* Many herbivorous fishes lack stomach, but, they rely on elongated midgut area. Carnivorous fishes have stomach or foregut for digestion.