Looking for good source of info regarding whiptail catfish

[foti]

Hi I'm having trouble working out different whiptail type sand correct pics to follow
Which are most common and available

 

[beencees]

I think the most common in Aus are LG6's and Royals but there are others around.

 

[foti]

See I know that the
Longnose whip
Common whip
Royal whip
Are all here in aus and that they are easily sourced
Just not sure on all there Lno.s
Plus others that are here
Plus what is the difference between
Lg6 / common / royals / so on?
Any dwarf?