I feel a bit silly now. I went and purchased a pair of burdigala because I thought I only had males. Then I realised I had what appeared to be a burdigala female in with my palangkarensis and my palangkarensis female in with my burdigala males.
I swapped them around but nothing really happened with the burdigala so I thought I must have been wrong again. Well I noticed my female completely coloured up this morning and so I chucked some oak leaves in for my male to hopefully build a nest in.
He has taken the initiative and I believe they are spawning up in there or at least preparing to!! So hoping they are as I would love to get some fry from this species.
Would have preferred they did this beforehand though so I could have at least ordered some coccina instead of another burdigala pair.