Onto the "clowns" - currently have 4 different clowns, all which were labelled as either Peckoltia vittata or P. pulcher, but they all look different enough to be different spp's.
1. Dirty light brown, very slight banding (brown on brown - not obvious). Chunky and spiney in appearance.
2. Mopani wood brown, very thin golden bands, not striking but has a "lyre tail"
3. Light cream and black banded. very defined. eyes seem more protruded.
4. light brown and black banded. prominent cheek spines. banding starts narrow on the face and moves to thicker banding towards the tail.
All of the ones are approx 2" long and i don't believe they are any where near adult size (but difficult to know)
I hope my vague descriptions shed some light and i reall want a digital camera!

Cheers for your time and help
Chris