Fish in most of the developing countries is a rich protein source. The creation of a barrier across the migration
path of the fish can considerably undermine the survival of the affected fish. Simple fish ladders, or quite elaborate
mechanised lifts, can be provided to permit fish to reach their breeding spots. Adequate attention, however, needs
to be paid to proper designs of the engineering structure so as to effectively help the fish to cross the hurdle.
Otherwise, overlooking of a simple factor can be disastrous to the regional economy