Q.2
Stomach is thick and sac-like in
which of the following fishes?
EXPLANATION
Comparative Digestive Tract Anatomy, Relative Gut Length (RGL), Trophic Adaptations and Gastric Morphology
- Feeding Habit Adaptations in Fish Digestive Systems:
- Carnivorous Fishes (e.g., Channa, Wallago, Loricaria, salmonids): Feed on bulky, discrete prey items (small fish, invertebrates). They possess a well-developed, muscular, thick, sac-like or distensible stomach with high $HCl$ and pepsin secretion to store and digest large animal proteins and bones.
- Herbivorous / Detritivorous Fishes (e.g., Labeo rohita, Cirrhinus mrigala, Catla catla): Many cyprinids are agastric (lack a true morphological acid-secreting stomach) and instead possess a swollen anterior intestinal bulb.
- nalysis:
- (Carnivorous fishes): Correct.
Correct option: (1) Carnivorous fishes
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