Hi Pa.
The honey gourami is not the same as a dwarf gourami, although they are both in the same family. The honey gourami is smaller than the dwarf gourami.
As for the dwarfs, there are names for all the colour variants. Such as flame DG, coral blue DG and red and blue DG. They are all slightly different -but only in their clouring, although some might be more delicate than others. The different colours are created by selective line breeding, and all originate from the common DG. It's like tiger barbs -there are green tiger barbs, red tiger barbs and albino tiger barbs. All these are just colour variants of the common tiger barb.
You say that there are different names but they look the same, this is because there may be more than one common name for one colour variant.
As for you thinking that your blue powder is actually a female neon, females are generally plain silver/grey. One way to make sure is that males have a more pointed dorsal fin and females is sloped.
Hope I have been some help.
