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fish categorie

What category are fish grouped into (mammal...etc)?

Wildlife Expert - Ken Burton

Sometimes even the most seemingly simple questions have complicated answers. This is one of those. Fish are vertebrates. However, they are so diverse that they cannot be placed into a single smaller group that includes all of them. While all mammals are in a single class, fish are placed into five classes in two superclasses (the jawless fishes, including hagfishes and lampreys; and the jawed fishes, including cartilaginous, lobe-finned, and ray-finned fishes). Examples of four classes are shown below; there are no lobe-finned fishes in North America. So, in short, "fish" isn't really a category at all but a collection of smaller categories.

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