From Maine to Florida, the endangered, prehistoric fish is rebounding, but a recent study shows just how vulnerable the U.S.

Fish were caught by local fishermen in the coast of the State of Rio de Janeiro (21-23°S, 42-45°W), Brazil. Hosts were mostly fresh, but some specimens were kept frozen at –20°C, until examination.

The predominance of small fish is in agreement with the general pattern of ichthyofauna for South America, where they represent at least 50% of the total species (Castro, 1999). This study illustrates ...