Managing the decline in New England’s commercial fishery has long been a delicate dance among fishermen, regulators and scientists.

The scientists estimate how many fish are available for harvest, and regulators use those estimates to allot catch shares among various groups of fishermen, called “sectors.”

It doesn’t always work smoothly.

Fishermen question the validity of the science, saying that they see more fish than the estimates would indicate. Regulators are influenced by members of Congress, who represent fishing communities, not fish, and are concerned with the communities’ economic survival.

Scientists say that they are doing the best they can with the data available, but what they can see paints a much darker picture than what the fishermen report.

Fortunately, there may be a way to produce data that everyone can be confident in: electronic monitoring.

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