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Catfishes are a diverse group of ray-finned fish known for their prominent barbels, which resemble whiskers. They are typically bottom-dwelling fish found in freshwater environments, but some species can also be found in brackish or saltwater habitats. Catfishes vary greatly in size, with some species being relatively small while others can grow to be quite large. These fish are characterized by their flattened heads and bodies, as well as their lack of scales. Catfishes are opportunistic feeders, consuming a wide variety of plant and animal matter.