The Berkley PowerBait Power Nymph features an irresistible scent and flavor that tempts fish to nibble on your hook. This bait entices the fish to hold onto your hook 18 times longer giving you more time and confidence to feel more bites. The PowerBait Power Nymphs are formulated to target trout and panfish. The nymphs mimic the juvenile stages of an insects life that most fish feed on.