|Stargate ~ Fire and Water|
Gerard is "Nem".
In this episode, Daniel Jackson is kidnapped by an Oanne named Nem who wants to know what happened to his mate Omoroca. Omoroca obviously at some point visited earth, and influenced early Phoenecian mythology. He searches Daniel's mind for the information only to find out that his mate was killed a long time ago by the Goa'uld.
The species is aquatic. Some believe that the Oanne are actually the Furlings! This is another heavy prothestic role. Screen caps are from Stargatecaps.com