Despite its name,the ectoparasitic marine lamprey Petromyzon marinus ascends freshwater streams to spawn.

Question

Quizplus · Accepted Answer

The statement is true. While the marine lamprey is indeed an ectoparasitic species that typically lives in saltwater environments, it does migrate upstream into freshwater streams and rivers for spawning purposes. Once the lamprey larvae hatch, they spend several years developing in freshwater before migrating back to the ocean.

Despite Its Name,the Ectoparasitic Marine Lamprey Petromyzon Marinus Ascends Freshwater