Fish farming

Fish farming

Of, or pertaining to the artificial mass cultivation of fish

Industry: Fishing

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Fish farming

Biological filtration

Fishing; Fish farming

These philtres make use of bacteria to break down wastes in the water into substances which are less toxic to the inhabitants, in a process known as the nitrogen cycle. Examples are under gravel ...

Biological reference points

Fishing; Fish farming

Fishing mortality rates that may provide acceptable protection against growth overfishing and/or recruitment overfishing for a particular stock. They are usually calculated from equilibrium ...

Molecular adsorption pads

Fishing; Fish farming

These are polyester pads which have been chemically treated to absorb certain substances from the water. This form of chemical filtration is placed in a canister or power filter. Note that they ...

Mortality rates

Fishing; Fish farming

Mortality rates are critical for determining the abundance of fish populations and the effects of harvesting strategies on yield and spawning potential from a stock. Fish abundance is a balance ...

Natural mortality (M)

Fishing; Fish farming

Deaths in a fish stock caused by predation, pollution, senility, etc., but not fishing.

Net increase (or decrease)

Fishing; Fish farming

New body substance elaborated in a stock, less the loss from all forms of mortality.

Effectiveness of fishing

Fishing; Fish farming

A general term referring to the percentage removal of fish from a stock (but not as specifically defined) as either rate of exploitation or instantaneous rate of fishing.