It is a lot of confusion with trade names. Everyone who sell a fish can give it a name. And many do.
For Synchiropus moyeri I have seen Moyers dragonet, Ruby red dragonet and red dragonet. But normally You will get a Synchiropus tudorjonesi and that is what You want and expect. There is another species around looking a lot like tudorjonesi but it has other colors on the ventral fins.
Synchiropus stellatus is also sold as red dragonet among other names. Starry dragonet is most common. I have seen that one too under the name ruby red dragonet.
Neosynchiropus ocellatus is mostly sold under the name Scooter Blenny in the US but it is definitily not a blenny. It is a dragonet.
One of the best traders i Europe sell three species of Chaetodon, punctatofasciatus, guttatissimus and pelewensis under the same trade name, Dot Dash Butterfly.
Thats the other way, giving similar species the same trade name. Its just the color and pattern that differs. But of course they have more trade names.
Just look them up on Google and go to the big American online sellers.
For me there is only one place on the web where i begin to check up new fishes and that is fishbase.org. It is about fishes in the wild and written by scientists around the world with no interest in the trade. If i am interested of a fish after that i check different forums.