Fish farming

Fish farming

Of, or pertaining to the artificial mass cultivation of fish

Industry: Fishing

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Fish farming

Algae

Fishing; Fish farming

Plant-like organisms which grow in water. While many algae grow as a fuzz or slime without much visible structure, some is leafy. Other algae is hard and calcareous.

Absolute recruitment

Fishing; Fish farming

The number of fish which grow into the catchable size range in a unit of time (usually a year).

Rate of utilisation

Fishing; Fish farming

Similar to rate of exploitation, except that only the fish landed are considered. The distinction between catch and landings is important when considerable quantities of fish are discarded at sea.

Abundance index

Fishing; Fish farming

Information obtained from samples or observations and used as a measure of the weight or number of fish which make up a stock.

A device used to add a substance to the aquarium water in a controlled manner. Ozone, kalkwasser, and carbon dioxide are the most common reactors. They are typically a chamber water is pumped through ...

Actinic lights

Fishing; Fish farming

Actinics are a type of fluorescent light that is very blue. This is the colour of light that is most useful to the chlorophyll in marine life, and is the colour of the sea below 10 meters.

Recruitment

Fishing; Fish farming

The amount of fish added to the exploitable stock each year due to growth and/or migration into the fishing area. For example, the number of fish that grow to become vulnerable to the fishing gear in ...