Progress in the development of marine flatfish farming suggests that, for two species, commercial viability is becoming a real possibility.
Dover sole can be reared in tanks on shore supplied with warmed water from the cooling of coastal power stations. Turbot can be reared likewise, or in cages floating in the sea.
The main area in which problems remain is in the controlled production of juveniles in hatcheries on shore, but recent progress has been good.
There is a good potential in the UK for marine fish farming, with probable sites available for an annual output of all species of up to around 50,000 tonnes p.a. At this level, or even at 25% of this level, the requirement for the catching of fish as farm fodder would become significant to the fishing industry.
This paper describes only those aspects of progress or outstanding problems which, in the author's opinion, are of major significance in economic terms.