Swimbaits lures are were originall designed to imitate rainbow trout in California reservoirs where big largemouth bass and striped bass fed on. They are larger and more lifelike imitations. while they come in a variety of sizes, we concentrate on larger bait as Their primary focus is on imitating the swimming pattern of a real fish. And they do it very well. When you want to target larger fish, swimbaits are a perfect fishing lure for you.