This is the smallest reel size, which is best suited for catching lighter fish in freshwater environments. These reels are suitable for catching fish that weigh around 15lbs, including crappie, some bass, bluegill, and trout. For more information about reel sizes, check out our detailed spinning reel size chart.If you intend to use an ultralight spinning reel for saltwater fishing or heavier fish, it is recommended to look for a spinning reel size of between 4000 and 7000.