Isaiah 19:8

The fishers also shall mourn, and all they that cast angle into the brooks shall lament, and they that spread nets upon the waters shall languish.

Cross-reference

Exodus 7:21 Allusion

Exodus 7:21 recounts fish dying in the Nile from the plague of blood — the same catastrophe that leaves fishermen mourning in Isaiah 19:8.

Ezekiel 47:10 depicts a future with abundant fishermen and fish — the opposite of the ruin and despair among fishermen in Isaiah 19:8.

Numbers 11:5 recalls abundant fish in Egypt — contrasting with the loss of fish in Isaiah 19:8 that causes fishermen to mourn.

Habakkuk 1:15 uses hook and net imagery for catching people — a parallel metaphor to the fishing activity in Isaiah 19:8, but applied to conquest.