Writing and Reading

      [1] Waterway barriers come in all shapes and sizes, and there are dozens of different species of fish affected by them, so a single fish passage solution will not work for all fish in all locations. [2] “Scientists 
have learned a great deal over the past several decades when it comes to fish nature and fish passage design,” O’Connell said. [3] “Most species need passages that are designed for their unique physical traits.” [4] For instance, most migratory fish face problems with barriers when they are heading downstream out to sea, such as getting caught in power generating turbines, which results in many fish kills each year. [5] Thus, protecting this species could require solutions that might not work for other fish species. [6] “Because of the complexity and needs of so many different migratory fish, there is a tremendous amount of work left to be done to improve passage for the whole range of species,” Castro-Santos said.

The author wants to add the following sentence to the paragraph.

This is especially true for American eels because they spend most of their adult lives in fresh water and travel out to sea for spawning, which is the opposite of most migratory fishes’ movement pattern.

To make the paragraph most logical, the sentence should be placed