Below are the most popular Conventional Patterns of Bass fishing flies:
Bass are ravenous eaters and are known to eat prey up to half of their own length. Because bass swallow their prey whole, the size of bass fishing flies must be smaller than the width of the bass mouth. Being hungry predators, they usually seek out the largest prey they can find that will fit into their mouths.
The movement of the fishing fly is critical to attracting the bass. Bass quickly jump at the chance to swallow anything moving, but also regularly spit out a would-be meal, perhaps due to the taste or texture. When bass fishing, it�s important to use fishing flies with a strategic design and hook position.

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