Wiktionary
bigger fish to fry
n. 1 (context idiomatic English) A much more pressing issue to attend to. 2 (context idiomatic English) A higher valued result or target to reach.
Usage examples of "bigger fish to fry".
Though Sloat promised himself that as soon as he had taken care of Lily Cavanaugh and her boy he was going to begin dropping clients from his list - he had much bigger fish to fry now.
But she also acknowledged what Cathy had been arguing for several seasons, 'Both Cathy and I have bigger fish to fry.
Sheep stealing and shoplifting are everyday crimes in Heckley, but there are local villains with bigger fish to fry.