a scheming person; someone who schemes to gain an advantage
"The new manager is clearly an angler, quietly manipulating colleagues to secure the promotion for himself while others work harder than anyone else."
fishes having large mouths with a wormlike filament attached for luring prey
"The anglerfish drifted silently in the deep ocean, its glowing lure swaying to attract unsuspecting prey."
A person who fishes with a hook and line.
"The angler spent hours by the river, patiently waiting for a bass to bite his lure."