Page 43 - fish_farms_curriculum

LEARNING ACTIVITY-6

AIM

 You will learn aquaculture in thermal water and their nutritional needs.

RESEARCH

 Discuss in the classroom about the possible problems that may occur in aquaculture in

thermal water. List these negativities and make a research on what measures can be
taken.

 Research at least one subject from the fish farming unit in thermal water and explain it

to your friends in the classroom environment by using visual materials.

5. Fish Farming and Nutritional Needs in Thermal Water

5.1. Nutrition Types of Fish

Like other animals in nature, the diet of fish is divided into three: carnivores (carnivores),
herbivores (herbivores) and omnivores (both carnivores and herbivores). While some species

maintain this nutritional characteristic at all stages of their lives, some other species may show
different nutritional needs at different life stages. For example, while trout are carnivorous in

all life stages (larva, fry, fattening, brood), some carp may be omnivorous in the early stages
of their lives, and then herbivorous.

According to the feeding behavior of the fish, there may be differentiations in their
morphological structures. Digestive system also varies in fish whose mouth structures differ

according to their feeding habits. For example, with herbivorous carps, the stomach is
elongated in the form of a tube and merged with the intestine, while carnivorous fish such as

trout have a stomach with strong muscles.

In order to minimize the cost of feed, which is an important economic expense in the

production of aquaculture, it is important to know the type of fish nutrition in the selection of

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