Fish farming

Fish farming

Of, or pertaining to the artificial mass cultivation of fish

Industry: Fishing

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Fish farming

Double-layered spira (DLS)

Fishing; Fish farming

A material made by rolling up a polyester pad and plastic wire mesh. It is used in both biological and mechanical filters.

The largest annual harvest, in weight, that can be removed from a fish stock year after year, under existing environmental conditions. This can be estimated in various ways, from maximum values from ...

Maintainable yield

Fishing; Fish farming

The largest catch that can be maintained from the population, at whatever level of stock size, over an indefinite period. It will be identical to the sustainable yield for populations below the level ...

Maximum sustainable yield (MSY)

Fishing; Fish farming

The largest average catch or yield that can continuously be taken from a stock under existing environmental conditions. (For species with fluctuating recruitment, the maximum might be obtained by ...

Mechanical filtration

Fishing; Fish farming

These philtres mechanically remove particles from the water. Examples are under gravel filters, canister filters, and wet/dry prefilters.

Metal halide

Fishing; Fish farming

Metal halide lights are a type of light bulb which burns very white and very bright. They require a special fixture and ballast. They are the closest thing we have to artificial sunlight, and are ...

Yield per recruit

Fishing; Fish farming

The expected lifetime yield per fish of a specific age (e.g., per age 2 individual). For a given exploitation pattern, rate of growth, and natural mortality, an expected equilibrium value of Y/R can ...