Brycon.. Dorado get huge and have a worse temperment.. I would make a WTB: Brycon if that's what you want.. more people will recognize that name..
BTW, there are many different types of Brycon's as "Brycon" is actually a whole family of fish.. See..
http://www.fishbase.org/NomenClatur...ntains&crit2_value=&group=summary&backstep=-2
But common name Brycon is usually the fish that looks alot like the dorado but smaller/less tempermental.
This is probably the hilari fish you're looking for??
http://www.fishbase.org/Summary/speciesSummary.php?ID=52994&genusname=Brycon&speciesname=hilarii
I believe this is the fish commonly sold as "Brycon" at LFS', etc
http://www.fishbase.org/Summary/speciesSummary.php?ID=51838&genusname=Brycon&speciesname=whitei
Double check those scientific names to make sure that's what you want befor doing a "WTB" though.. I don't want to get you confused and have you getting the wrong fish.