Popular Fish Species of North America Fish are some of the most interesting creatures on earth! They come in an amazing variety of species and sizes. They live in virtually all waters where their life basics are available to them. Some are predators; they feed on other fish and aquatic creatures. Others are prey species, spending their lives in danger of being gobbled by larger fish that share their waters. The first step in learning to catch fish is learning about fish: which species are available, where they can be found, and what they eat. The more you know about your target species' life habits, the more likely you are to catch them. Many expert anglers learn even the smallest details about the daily patterns of the fish they're after. This helps them locate the fish and select just the right bait and technique to make them bite. Following is a brief look at the freshwater fish species that are most popular with North American anglers. As your fishing skills grow ...