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6 sty 2022 · Nearly all the highly nutritious fish are ground up to feed salmon and other farm-raised species that are worth billions of dollars. Now, scientists studying ancient sediments and fossils have shown warming waters once nearly eliminated this valuable resource, raising fears that today’s climate change could repeat the disaster.
The world produces around 200 million tonnes of fish and seafood every year. This comes from a combination of wild fish catch and fish farming. In fact, the rapid growth of aquaculture over the last few decades means we now produce more seafood from fish farms than we do from fisheries.
The largest living species is the basking shark (Cetorhinus maximus) of the world's northern temperate oceans, also the second largest fish. The largest specimen, which was examined in 1851, measured 12.3 m (40 ft) long and weighed 16 tonnes. [ 1 ]
13 kwi 2016 · The FAO estimates that over 600 aquatic species are produced globally in a variety of aquaculture systems using freshwater, brackish water or salt water. In the U.S., over 91 percent of the seafood we eat is imported. China is the largest exporter of fish globally, the third largest importer of fish and the biggest aquaculture producer.
25 mar 2020 · Here, a basin-wide capture survey during 2017–2018 found 332 fish species, but did not find a single specimen of Chinese paddlefish. Furthermore, 140 historically reported fish species have not been found and most of them are considered highly endangered.
High-value and high-profit margins give Atlantic salmon, which is the third most valuable aquaculture finfish species produced today, room to innovate, including making larger and stronger cages that can be deployed offshore, away from heavily used coastal zones (Chu et al., 2020).
19 sie 2020 · Our analyses uncovered a substantial increase in the functional richness of both ray-finned fishes (80% of LMEs) and cartilaginous species (sharks and rays) (75% of LMESs), in line with an increase in the taxonomic richness, extracted from these ecosystems.
