in the us law requires fishery managers to rebuild depleted fish stocks within ten years if possible these legislative mandates may constrain the rebuilding strategies available to fishery managers and stakeholders but there still may be substantial gains from careful design of rebuilding plans that better meet stakeholder objectives and reduce the costs of rebuilding a depleted fishery more gradual rebuilding strategies are likely to generate greater economic benefits if demand is inelastic and marginal costs increase with the level of fishing activity in many cases it will be desirable to rebuild fish stocks to well above by but this will not always be the case and again depends on a combination of biological and technicaleconomic factors that will vary from fishery to fishery