2.1 Fish cage

• outline factors to consider when selecting a suitable site for a fish cage
• construct a simple fish cage
• describe the stocking of a fish cage
• describe the management and maintenance practices undertaken in a fish cage
• appreciate a fish cage as a production system in aquaculture

“How do various factors affect the management and maintenance of a fish cage?”

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1. Fish cages in aquaculture
   40 min · 1 practice tasks · quiz
   Describe a fish cage and its place in aquaculture.
2. Types of fish cages
   40 min · 1 practice tasks · quiz
   Describe fixed, floating, submersible and submerged cages.
3. Choosing a site: depth and water quality
   40 min · 1 practice tasks · quiz
   Outline the depth and water quality factors in siting a cage.
4. Choosing a site: access and navigation
   40 min · 1 practice tasks · quiz
   Outline access, navigation and shared-use factors in siting a cage.
5. Parts of a fish cage
   40 min · 1 practice tasks · quiz
   Identify and describe the parts of a fish cage.
6. Materials for a fish cage
   40 min · 1 practice tasks · quiz
   Select suitable materials for building a fish cage.
7. Constructing a simple fish cage
   40 min · 1 practice tasks · quiz
   Describe the steps in constructing a simple fish cage.
8. Installing and mooring a fish cage
   40 min · 1 practice tasks · quiz
   Describe how a cage is installed and moored safely.
9. A safe installation demonstration
   40 min · 1 practice tasks · quiz
   Describe how a cage is installed safely, step by step.
10. Sourcing and transporting fingerlings
    40 min · 1 practice tasks · quiz
    Describe where fingerlings come from and how they are transported.
11. Nursery nets and stocking density
    40 min · 1 practice tasks · quiz
    Describe nursery nets and how stocking density is decided.
12. Stocking a fish cage
    40 min · 1 practice tasks · quiz
    Describe the steps in stocking a fish cage correctly.
13. Monitoring water quality
    40 min · 1 practice tasks · quiz
    Describe how water quality is monitored in a fish cage.
14. Feeding and feed management
    40 min · 1 practice tasks · quiz
    Describe feeding and feed management in a fish cage.
15. Fish diseases and their control
    40 min · 1 practice tasks · quiz
    Identify signs of disease and describe their control.
16. Predators and their control
    40 min · 1 practice tasks · quiz
    Identify predators of cage fish and describe their control.
17. Record keeping in a fish cage
    40 min · 1 practice tasks · quiz
    Describe the records kept in a cage farm and their value.
18. Maintaining a fish cage
    40 min · 1 practice tasks · quiz
    Describe the maintenance practices carried out on a fish cage.
19. Environmental care around a fish cage
    40 min · 1 practice tasks · quiz
    Describe how a cage farm avoids polluting the water body.
20. Review of the fish cage node
    40 min · 1 practice tasks · quiz
    Review siting, building, stocking, managing and caring for a cage.