Medium spring green black bass is a fish that is bred in captivity and is a very exciting fish. medium spring green black bass are known for their bright colors, and their bright colors can be seen in their fins, body, and scales. medium spring green black bass have a very slim body, and they have a long, slim tail. medium spring green black bass have a very large head, and they have a very large mouth. medium spring green black bass have a very large body,