Isaiah 19:10

10.And all that make ponds. As to the word שכר, (secher,) there is no absolute necessity, in my opinion, for translating it a net; for the derivation shews it, on the contrary, to denote a lucrative occupation. (34)

Where fishes are very abundant, they are also preserved in pools and ponds; because the fishers would otherwise be constrained to sell them at a very low price. Besides, when they throw a net, they are not always successful. He therefore follows out the same subject, “It will not be possible either to take or to preserve fishes. Pools will be of no use.”