Aquaculture Farm Manager

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“Aquaculture based Frequently Asked Questions by expert members with experience as Aquaculture. These questions and answers will help you strengthen your technical skills, prepare for the new job test and quickly revise the concepts”



85 Aquaculture Farm Manager Questions And Answers

61⟩ Tell us are diseases spread from farmed to wild fish?

There is no evidence to indicate that disease outbreaks at salmon farms have resulted in any increase in diseases in wild salmon. Research indicates that farmed salmon are at a higher risk of contracting a disease from wild fish. The aquaculture industry is strictly regulated and has developed disease vaccines, alternative treatments and good production practices to further reduce the incidence and severity of disease impacts.

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66⟩ Tell me how long does it take for the fish to grow for marketable size?

This is where gullible investors fall prey. Before you go into cat fish farming, make sure you know your market or better still make sure you know your buyers and what type of size they buy. For instance it will be difficult for you to get a buyer for a 500g fish if your market environments demands for a 1kg fish and vice versa. However, on average, you should be able to get a size aabout 1kg within 6 months PROVIDED you fed them well and they are raised with the best and healthy practices Read More

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67⟩ Tell me what kind of feed is given to farmed fish?

Different types of feeds, mainly distinguished by variations in pellet size, fat and protein content, are used according to the life stage of the fish. Many ingredients are the same as those used in the production of feed for domestic animals, and are all natural products, including oilseed meals, grain products, protein-rich meals of animal origin (fish, poultry), fish and plant oils. Farmed shellfish rely on natural food in the water for their growth, and are not given additional food.

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70⟩ Tell me is there a market for tilapia in our country?

Yes, there assuredly is. Tilapia is an internationally traded, high-quality commodity. It is by no means a 'trash fish', as is maasbanker, for example. Tilapia compares favourably with hake in the quality of its flesh and lends itself to preparation in many ways. The traditional rural market is for small, whole, wild-coloured fish of 100g to 300g. The urban end of the market is for red tilapia of 450g to 600g.

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71⟩ Explain what is feed conversion ratio?

Feed conversion ratio (FCR) is calculated from the number of kilograms of feed used to produce one kilogram of fish. Feeding farmed fish is more efficient than feeding land-based animals, and the average FCR for farmed fish is close to 1:1.

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74⟩ Tell us do we need a permit to conduct aquaculture?

Aquaculture as defined by the Fisheries Management Act does require a permit. There are different types of permit depending on the type of activity you are doing, covering everything from hatchery, fish out, land and lease based culture.

More information on the types of permits and the permit application process can be obtained from the department's web site or by talking to staff from the Aquaculture unit. If you only wish to produce fish in farm dams for your own consumption, an aquaculture permit is not required.

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75⟩ Do you know what are the major species farmed in the EU?

Approximately 50% of the aquaculture production in the EU is shellfish. Mussels and oysters are the most popular shellfish. Marine fish such as salmon, sea bream and sea bass represent about 27% of our fish farm produce whilst freshwater fish such as trout and carp account for 23% of fish farmed in the EU. The species farmed in the EU are very diverse and include clams, scallops, lobsters, and sturgeon (caviar). Algae production is a developing sector.

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76⟩ Explain how are predators controlled by aquaculture companies?

Most predators, which may include seals, birds of prey and raccoons, are protected by federal or provincial law. The most common control methods are barriers - such as nets, covers or building enclosures - auditory deterrents and removal. Firearms are used only as a last resort.

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77⟩ Do you know how are fish farmed?

Shellfish such as mussels and oysters are grown on ropes, poles or table-like structures. They require clean water to feed on the nutrients suspended in the water. Marine fish such as salmon and sea bass are farmed in large net pens suspended from the sea's surface. Freshwater fish such as trout are usually farmed in a series of tanks through which river water is diverted. Other freshwater fish such as carp are farmed in large lakes and ponds.

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79⟩ Tell me why do we need aquaculture?

The output of the world's wild fisheries is either steady or declining, yet the human population continues to grow. Aquaculture already supplies half the world's seafood consumed by humans. The United Nations Food and Agriculture Organization forecasts a global seafood shortage of 50 - 80 million tonnes by 2030, and aquaculture will help meet that growing demand.

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