Nearly 50 years after the snail darter temporarily blocked the construction of a dam in Tennessee, researchers at Yale University found that the endangered species technically is not a species at all.

Scientists say the snail darter, whose endangered species status delayed the building of a dam in Tennessee in the 1970s, is a genetic match of a different fish. By Jason Nark For such a tiny fish ...

A lawsuit to protect the snail darter from the Tellico Dam in Tennessee offered the first real test of the 1973 Endangered Species Act. But a new study disputes the fish’s status as a distinct ...