Which type of arrowhead is designed to spear fish and secure them until landed with an attached line?

The type of arrowhead designed specifically for spearing fish and securing them until they can be landed is known as a fish point. Fish points typically feature barbs or a unique design that helps to catch and hold fish effectively when they are struck. The attached line is crucial because, once a fish is hit, it can struggle and pull away; the line allows the angler to retrieve the fish without losing it. This specific design is tailored to the needs of fishing, distinguishing it from other arrowheads that are primarily aimed at hunting terrestrial game.

Broadheads, field points, and flint points serve different purposes in archery and hunting tasks. Broadheads are designed for hunting large game due to their sharp blades, field points are generally used for practice and target shooting, while flint points represent a traditional method of arrowhead making, often historical and not specifically geared towards modern fishing methods. Hence, fish points are the correct answer for this question based on their functionality in catching fish.