The cost of saving the grotto sculpin, a small cave-dwelling fish in southeast Missouri, will cost the U.S. Fish and Wildlife Service between $140,000 and $4 million over the next 18 years. Several factors, including habitat, the species' designation as endangered and current efforts to preserve them will affect the cost over the years. "The economic analysis considers economic impacts expected solely as a result of critical habitat designation, rather than as a result of 'baseline protections,' " said the service's Laura Ragan.

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