Bristlenose and Raphael catfish

[New Boy]

Does anyone know if bristlenose catfish or raphael cats (aka white spotted talking catfish) are scaleless ?? They kind of look scaleless but I can't tell for sure.

I've got to add my second dosage of Protozin to stop white spot and it says on the bottle to half the dosage with loaches (having already halved the dosage because I haven't got an undergravel filter!) - and I've only just cottoned on that you need to halve the dosage because loaches are scaleless. Was in a bit of a panic yesterday so prob didn't pay as much attention as I should.

Thanks

 

[CFC]

They sure are, all catfish as far as i know are scaleless, some have armour plating but no scales.