Fish farming

Fish farming

Of, or pertaining to the artificial mass cultivation of fish

Industry: Fishing

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Fish farming

utilized stock, utilized population

Fishing; Fish farming

The part, by number, of the fish alive at a given time, which will be caught in future.

venturi

Fishing; Fish farming

A type of valve which produces bubbles by drawing air into quickly flowing water. It is sometimes used on protein skimmers.

vessel class

Fishing; Fish farming

Commercial fishing vessels are classified according to their gross registered tons (grt) of displacement. Vessels displacing less than 5 tons are not routinely monitored, and are referred to as ...

virtual population analysis (VPA)

An analysis of the catches from a given year class over its life in the fishery. If 10 fish from the 1968 year class were caught each year for 10 successive years from 1970 to 1979 (age 2 to age 11), ...

wave maker

Fishing; Fish farming

A device which switches powerheads on and off at timed or random intervals, to simulate wave action in an aquarium.

wet/dry filter

Fishing; Fish farming

This is a form of biological filtration which has media exposed to the air to aid in nitrification. Common forms are trickle filters and rotating "paddle wheel" filters.