Bait Fish

Bait fish are small fish caught for use as bait to attract large predatory fish, particularly game fish.  Species used are typically those that are common and breed rapidly, making them easy to catch and in regular supply.
Examples of marine bait fish are anchovies, halfbeaks, and scad. Freshwater bait fish include any fish of the minnow or carp family (Cyprinidae), sucker family (Catostomidae), top minnows or killifish family (Cyprinodontidae), shad family (Clupeidae), sculpin of the order Osteichthyes or sunfish family (Centrarchidae), excluding black basses and crappie.

Although bait fish typically have populations that fluctuate rapidly anyway, and so can potentially sustain significant recreational and commercial fisheries, regulations may exist to prevent overexploitation, as in Arkansas and Massachusetts. Studies by fisheries and conservation agencies monitor the health of bait fish populations, allowing regional governments to set quotas.

Jigs

Jigs have weighted metal heads and a tail made of animal hair, soft plastic, feathers or rubber. Anglers sometimes add a minnow or piece of pork rind to the jig's hook. Jigs can be used to catch nearly every kind of freshwater and many saltwater fish.

Minnows And Nightcrawlers

Basically, minnows are baby fish and a good all-around freshwater bait. They're readily available from bait and tackle shops or you can catch your own if it's legal in your area. Minnows come in different sizes. Use larger 'shiners' for bass and pike fishing.

For cast and retrieve, trolling and drifting, hook the minnow vertically through both lips or through the tail.

For still fishing with a bobber, hook the minnow through the back just above the dorsal fin. Take care not to damage the spinal cord. The key is to keep the fish moving on its own.

Tricks and Tips for Minnows

For really good action, hook the minnow upside down on a light jig. It will struggle to regain an upright position

Store minnows in a minnow bucket using the same water from which they were bought or captured, and take care not to crowd them. 

Worms are a good bait for nearly all freshwater fishing. You can find enough worms for fishing from a few shovels of dirt in your garden or from a shaded, damp area. Worms can also be purchased in fishing tackle stores and bait shops. For walleyes and bass use earthworms or night crawlers

For pan fish, sunfish and trout, use smaller manure worms. You can find them in cattle and horse pastures.

Trick and Tips for Worms

To prevent smaller fish from nibbling the worm without biting down on the hook, you can use just a piece of the worm.

If you have small worms, thread the hook through the side of the worm at several places along its body. For bait-stealing fish such as sunfish, thread the worm on the hook until the hook is completely covered. 

Spinners

Spinners have one or more blades that spin, or revolve, around a straight wire shaft. Some spinners have tails made of soft plastic or animal hair.

Spinnerbaits are lures with one or more blades that spin around a safety pin-type shaft. Most spinnerbaits have skirts made from animal hair, vinyl, rubber or other materials.