They move into a new area, within a few years they have cleaned out all these live, valuable fish, then they move on to another area.

几年后，当他们把一片海域的珍贵鱼种全都吸光之后，就会转移到一片新的海域。

youdao

The European Commission had called for reducing next year's catch to six thousand tons to improve the chances for the huge and highly valuable fish.

欧盟委员会曾呼吁将明年的捕捞限额降低到6000吨，以提高这种体型巨大、价格高昂的鱼类的生存机会。

youdao

Cod is far and away Iceland’s most valuable fish, but its stocks are falling: the tonnage caught since the 1990s has been about 200,000 a year, compared with about 400,000 in the 1960s.

鳕鱼无疑是冰岛最有价值的鱼类，但其存量正在衰减：从九十年代以来，其捕获的总吨数大约是每年20万吨，相比而言六十年代是大约40万吨。

youdao

Activists for sharks note that the fish are valuable in the ocean.

VOA: special.2009.06.16

"These are the habitats that provide really valuable places for the fish to get together, to aggregate,to spawn, so they are the bases of the fisheries."

VOA: standard.2010.05.26

They have both been criticised for declaring huge catches of the valuable fish, leading to fears for its sustainability.

BBC: Scots fishermen condemn Faroe Islands over herring move

They have both been criticised for declaring huge catches of the valuable fish in recent years, leading to fears for its sustainability.

BBC: No cod cuts hailed a 'good deal' for Scotland's fishermen

The island nations have been criticised for declaring huge catches of the valuable fish in recent years, leading to fears for its sustainability.

BBC: Mackerel