Fish Farming Quiz: Tilapia Fish Farming Questions

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Questions and Answers

What is the origin of Nile tilapia?

Africa (correct)

Asia

Europe

South America

In how many countries is Nile tilapia produced?

More than 100 (correct)

Around 75

Less than 50

Around 150

What is the preferred land elevation for freshwater ponds?

Flat areas for easy construction

Low-lying areas for easy access to water

Areas near rivers for natural drainage

Elevated areas to avoid floods (correct)

What type of soil is preferred for freshwater ponds?

Soil with low permeability to water Signup and view all the answers

What is the ideal pH range of the soil for freshwater pond site selection?

6.5 to 9.0 Signup and view all the answers

What is the main factor for successful fish culture in terms of water source?

Permanent source of good quality water Signup and view all the answers

What are the sources of water suitable for fish culture?

Underground water, irrigation canal, river, spring, lakes Signup and view all the answers

What is a key consideration for site selection in tilapia culture?

Accessibility to facilitate communication and transportation Signup and view all the answers

What is the first step in the process of tilapia culture/business?

Fish stocking Signup and view all the answers

What is the process to determine the suitability of soil for pond construction?

Squeeze method Signup and view all the answers

What is the feeding rate in grams per day for 50,000 fish with an average body weight of 5 grams each?

25,000 grams/day Signup and view all the answers

What is the lethal level of ammonia in milligrams per liter?

2 mg/liter Signup and view all the answers

What is the recommended dissolved oxygen level in milligrams per liter?

5 mg/liter or higher Signup and view all the answers

What temperature range is suitable for the pond environment?

28-32°C Signup and view all the answers

What is the stocking density in fish per square meter?

5 per sq.m. Signup and view all the answers

What is the lethal level of carbon dioxide concentration in milligrams per liter?

> 73 mg/liter Signup and view all the answers

What is the recommended salinity range in parts per thousand (ppt)?

0-15 ppt Signup and view all the answers

What is the recommended pH range for the pond environment?

6.5 - 9 Signup and view all the answers

What is the size of the pond in square meters?

10,000 sq.m. Signup and view all the answers

What is the size of the pond in hectares?

1 hectare Signup and view all the answers

What is the recommended range for pond depth in tilapia fish farming?

0.5m to 1m at the shallow end, sloping to 1.5m to 2.0m at the drain end Signup and view all the answers

What is used for drainage in the ponds?

Gate valves and stand pipes Signup and view all the answers

What percentage of production costs is attributed to feed cost in tilapia fish farming?

60-70% Signup and view all the answers

What are the three methods of fish culture used in tilapia fish farming?

Extensive, semi-intensive, and intensive Signup and view all the answers

What is essential to make sub-surface nutrients available for the growth of fish food in the pond?

Cultivation of the pond bottom Signup and view all the answers

What is used to correct soil acidity in tilapia fish farming?

Leaching and liming Signup and view all the answers

Where can sources of fingerlings be obtained for tilapia fish farming?

Freshwater aquaculture centers and genetically enhanced strains Signup and view all the answers

What is the feeding period for tilapia fish farming?

Feeding is done twice a day Signup and view all the answers

What type of slopes are recommended for rectangular or square ponds in tilapia fish farming?

2:1 or 3:1 slopes on all sides Signup and view all the answers

How long should drainage take in the ponds for tilapia fish farming?

Not more than 3 days Signup and view all the answers

What is the main method of capture in tangle nets?

Entangling fins, scales, teeth, etc. in the mesh Signup and view all the answers

Which material is NOT classified under natural fibres for fishing gear?

Polyvinile chloride (PVC) Signup and view all the answers

What is the main purpose of fish pumps?

To extract fish from the water Signup and view all the answers

Which net is mainly used for catching pelagic fish?

Purse seine net Signup and view all the answers

Which gear is used for catching Bombay duck in India?

Dol net Signup and view all the answers

What type of water is the Bandal gear used in?

River Signup and view all the answers

Which gear is used for catching mackerel?

Shore seinenet (Rampani net) Signup and view all the answers

Which gear is used for catching prawns and catfishes?

Scoop net / Dip net Signup and view all the answers

Which gear is mainly used for catching mollusca snails?

Dredges net Signup and view all the answers

Which gear is used for catching tuna fish?

Pole line, Hand line, Hook line Signup and view all the answers

What are the two main categories of fishing gears based on the method of operation?

Active and passive gears Signup and view all the answers

Which classification system is based on particular technical features of the fishing gear?

International Standard Statistical Classification of Fishing Gear (ISSCFG) Signup and view all the answers

What is the working platform to conduct fishing operations called?

Fishing craft Signup and view all the answers

Which type of gear requires large power and is operated by mechanized boats?

Active gears Signup and view all the answers

What are examples of passive gears?

Dip net, cast net, gill net Signup and view all the answers

Which classification system is based on the technical features of the gear?

ISSCFG Signup and view all the answers

What is the term for the equipments used in fishing?

Fish gear Signup and view all the answers

Which type of gear is operated by non-mechanized boats?

Passive gears Signup and view all the answers

What are examples of active gears?

Trawl net, purse net, shore seine net Signup and view all the answers

What is the term for the platform used to reach the fishing ground and conduct fishing operations?

Fishing craft Signup and view all the answers

Which classification system is accepted by the FAO?

International Standard Statistical Classification of Fishing Gears (ISSCFG) Signup and view all the answers

What type of gear employs implements like spears, clamps, and tongs for catching fish?

Grappling and wounding gear Signup and view all the answers

Which gear is used to mechanically, chemically, or electrically stupefy fish for ease of capture?

Stupefying devices Signup and view all the answers

What method involves using hooks, lines, baits, and different types of lines like hand line, set line, drift line, and troll line?

Hook and line fishing Signup and view all the answers

Which type of net is circular in shape and used for fishing by throwing or casting?

Cast nets Signup and view all the answers

What type of nets hang vertically in the water with floats at the top and weights at the bottom edge, used for encircling fish?

Seine nets Signup and view all the answers

Which gear requires engine-propelled boats for operation and includes dredges, sweep trawls, bottom trawls, and mid-water trawls?

Dragged gear Signup and view all the answers

Which type of nets employ long walls of webbing hung vertically in the water and can be set gill nets, drift gill nets, or encircling gears?

Gill nets Signup and view all the answers

What gear surrounds fish from the side and bottom and includes lamparas nets, ring nets, and purse seines?

Surrounding nets Signup and view all the answers

Which type of gill nets are set in water by means of anchors?

Set gill nets Signup and view all the answers

Study Notes

Tilapia Fish Farming: Key Steps and Considerations

Reliable source of electricity is available in the area for the fish farming operation
Pond construction involves digging into the ground using a backhoe
Pond depth should range from 0.5m to 1m at the shallow end, sloping to 1.5m to 2.0m at the drain end
Ponds can be rectangular or square in shape with 2:1 or 3:1 slopes on all sides
Gate valves and stand pipes are used for drainage, which should not take more than 3 days
Water supply lines should be sufficient to fill each pond within three days
Cultivation of the pond bottom is essential to make sub-surface nutrients available for the growth of fish food
Soil acidity limits the production of natural fish food, and methods like leaching and liming are used to correct acidity
Pond fertilization is done to stimulate primary productivity, inducing the growth of natural food
Three methods of fish culture are used: extensive, semi-intensive, and intensive
Sources of fingerlings include freshwater aquaculture centers and genetically enhanced strains
Feeding period involves supplemental feeds, with 60-70% of production costs attributed to feed cost; feeding is done twice a day at varying rates depending on fish size

Classification of Fishing Gears and Methods

The International Standard Statistical Classification of Fishing Gears (ISSCFG) is accepted by the FAO.
Andres Von Brandt classified fish catching methods into 16 major groups.
Grappling and wounding gear employs implements like spears, clamps, tongs, and bows for catching fish.
Stupefying devices are used to mechanically, chemically, or electrically stupefy fish for ease of capture.
Hook and line fishing involves using hooks, lines, baits, and different types of lines like hand line, set line, drift line, and troll line.
Fish traps like basket traps, verandah nets, and scoop nets are used to catch specific fish species.
Dragged gear includes dredges, sweep trawls, bottom trawls, and mid-water trawls that require engine-propelled boats for operation.
Cast nets are circular in shape and used for fishing by throwing or casting.
Seine nets hang vertically in the water with floats at the top and weights at the bottom edge, used for encircling fish.
Surrounding nets include lamparas nets, ring nets, and purse seines, which surround fish from the side and bottom.
Gill nets employ long walls of webbing hung vertically in the water and can be set gill nets, drift gill nets, or encircling gears.
Set gill nets are set in water by means of anchors.

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Description

Test your knowledge of tilapia fish farming with this quiz! Explore key steps and considerations, from pond construction and water supply to feeding methods and fish culture. Learn about essential factors for successful tilapia farming.

Tilapia Fish Farming Quiz