Question

For how much time an average meal stays in a fish-hook stomach?
A. 6-8 hrs
B. 3-4 hrs
C. 1-2 hrs
D. 8-10 hrs

Answer 1

Fish feeds are the food that is given to fishes and act as their meal. A Complete diet includes all the ingredients (protein, carbohydrates, fats, vitamins, and minerals) necessary for the optimal growth and health of the fish. The feed is available in a number of types and includes various sizes.

Complete answer:

Just like we humans need a balanced diet in order to obtain proper nutrition. Good nutrition is essential for the growth of fishes too. Fishes are provided with different diets in the form of feeds.
The rate of feeding and frequencies are in part a function of fish size. When the fish is at the larval stage or is a fry (next stage of fish after larva) it needs to be fed a high-protein diet frequently and in excess amount. Small fish must eat nearly continuously and be fed almost hourly because they have high energy demands.
Feed acceptability, palatability(acceptable for eating), and digestibility vary with the ingredients and feed quality.
There are also a number of factors that affect the feeding rates and gastric evacuation time (emptying of gastric contents) such as temperature, body size, gut capacity, season, metabolic rate, etc. This gastric emptying rate decreases with an increase in time. This gastric emptying time is approximately 3-4 hours.

Hence, the correct answer is option (B).

Note: A number of factors affect the feeding rates of fish directly. These include life stage, dissolved oxygen levels, time of day, season, water temperature, and other water quality variables. For example, when the lowest dissolved oxygen levels occur in ponds, feeding fish grown in that pond early in the morning is not advisable.