fish farming

Fish farming

Raising fish for commercial purposes (particularly for food )

Aquaculture

The farming of aquatic organisms including fish, mollusk, crustaceans, reptiles, mammals, and aquatic plants for commercial and recreational purposes

Fisheries

The science of sourcing fish and other aquatic resources from natural environment for commercial and other recreational purposes

Seafood

Aquatic animals caught or farmed for human consumption in marine and freshwater settings

How do water conditions differ based on salinity?

No salt in fresh water fish farming, high salt levels in sea water fish farming

Where is sea water fish farming done

Traditionally in-shore or off shore

What temperature is needed for cold water fish farming

<20 degrees Celsius

What temperature is needed for warm water fish farming?

>20 degrees Celsius

What is a type of structure of water flow

Ponds / lakes / reservoirs

What is a type of structure of water flow

Raceways

What is a type of structure of water flow

Cages

What is a type of structure of water flow

Tanks

Types of water flow management

Static

Types of water flow management

Flow through

Types of water flow management

Re-circulation

What types of stocking density are there

Extensive systems

What types of stocking density are there

Semi-intensive systems

What types of stocking density are there

Semi-intensive systems

What types of stocking density are there

Intensive systems

What do extensive systems entail

Minimum human intervention, low stocking density

What do semi-intensive systems entail

Fish are fed with feed or use fertilisers to make natural vegetation

What do intensive systems entail

High stocking density, high level of input and management

What are the two different number of species cultured called

Monoculture, polyculture

what is monoculture

Culture of single species

What is polyculture

Culture more than one species

How many small to medium scale trout farms are there in the uk

Around 290

Where is the majority of trout farming in the UK?

Central and southern Scotland, south England and North Yorkshire

What is the average yearly production of trout in the UK?

12,400 tonnes

what is the containment for trout farming in the uk

freshwater tanks, ponds, raceways, pens and marine pens

What are the rearing conditions of trout farming in the UK?

Clean water supply and flow, dissolved oxygen >8mg/L

What trouts are farmed in the UK?

Rainbow trout, brown trout

Fill in the sentence:

Using artificial breeding, hatchery-reared bloodstock fish produce ___

gametes

Fill in the blank:

Eggs are reared to produce fly ___ trout , _____ trout

Diploid , triploid

What happens to fry when they become fingerlings

Sold onto producers to grow into restocking or table trout

What is the most farmed fish in the UK?

Atlantic salmon

What impact does Atlantic salmon industry have on export economy?

High impact

Is the Atlantic salmon industry an old or a young one?

Young

In what ways does Atlantic salmon farming method mimic freshwater sea water life cycle?

Fish are artificially spawned

In what ways does Atlantic salmon farming method mimic freshwater sea water life cycle?

Fresh water hatcheries and nurseries rear fry to pre-smolt, seawater stock smolt in net pens and rear on growing to harvest

What type of fish is carp

Coarse fish

What are some features of a carp?

Hardy fish

What are some features of a carp?

Gain weight fast

What are some features of a carp?

Can tolerate different water conditions

Where are carp farmed extensively

In purpose built or natural water bodies

In what phase are carp farmed intensively

The hatchery phase

What is the biggest threat to salmon production?

Sea lice infestation

What is an alternative biological method to chemicals or medicines to aid sea life infestation?

Cleaner fish

What are lumpfish / lumpsuckers

Small marine fish of the family cyclopteridae

Where are lumpfish/lumpsuckers found ?

In cold waters of the arctic, North Atlantic and north pacific oceans