Fish wheel salmon species Chinook, Chum, Coho, Sockeye, and Pink) and other anadromous species of fish, has given fish wheels their second name as "salmon" wheels. Although salmon were prioritized by commercial fishers and Indigenous peoples (albeit for different reasons,) other fish such as steelhead trout ("Oncorhynchus mykiss"), ooligan ("Thaleichthys pacificus"), and lamprey ("Lampetra tridentata") were also considered valuable catch. While the fish wheel is best known for its presence on the Northwestern coast of North America, there is debate whether the technology arrived via Asian migrants who had come to labor in the gold fields, by Scottish and Russian migrants, or
A Fish Called Selma Guy", in order to get a better representation of his performance. Throughout "A Fish Called Selma", it is hinted that Troy engages in strange sexual activity. The writers initially did not know what the "unsavory" sexual preference would be, but eventually decided on a fish fetish, a suggestion from executive producer James L. Brooks, since it was "so perverted and strange, that it was over the top". At the episode's table reading, an attendee exclaimed that the line, "from now on she's smoking for two" has "got to go" from the script; however, her request was denied. On the walls