For us fishermen: It may be a ridiculous notion to think the Los Angeles River could ever support a resident steelhead population. In fact, it may be ridiculous to contemplate that this gritty icon of shoot-‘em-up movies like “To Live and Die in L.A.” will ever shed its miles of concrete, flood-control skin in favor of a sustainable habitat. Yet, talk to the various players in the multi-year, multi-million dollar reconstruction drama and a common theme emerges: steelhead restoration. Whether it’s actually feasible or not, the steelhead has become a symbol of the river’s potential rebirth. In the years to come, whether flapping fins or flummery will triumph, remains to be seen. Problems abound with a restoration effort of this size, 51 miles through a morass of cities, from the San Fernando Valley to the port of Long Beach. Those reading these pages outside of Los Angeles must wonder if steelhead ever swam in the river to begin with. The answer, which is ironic even to those of us