Probably the most popular kinds of fish in this area are bass, white perch or crappie, bream, and catfish. They are well known because they are fun to catch and good to eat. However, in terms of biological diversity, this group falls at the bottom rung of the aquatic ladder. In Louisiana, there are only two species of black bass, two species of bream-like sunfish. Another group, almost completely unknown even to amid fishermen, swims our rivers and creeks with dramatic diversity of form, color, and species. Collectively, they are called Darters.