Store owner told me these were bred in Germany, near the border with Poland. Apparently this shop is the only one in Holland that has them, hence my surprise about the price; a mere €10 a piece. (my only guess is that most aquarists are happy with the cheapest common ancistrus?)
Ofcourse I would love for them to breed, there are plenty of cavelike structures in the tank, I will be adding a couple of log-like tubes especially for these but I suppose the Apistogramma will love them aswell. And they too, may want to breed. They're nice wild caught Bitaeniata, and I agree with your thoughts on allowing fish room/possibility to breed
(if I see signs of breeding, I do have the room to move them to a 60cm tank; not sure how scary the apisto's are to them or the fry, but it seems easier to remove just 2 or 3 Claro as opposed to the 4 apisto's)
For now though, I'll just let them settle in, make sure they have enough food and good water

they are quite skittish, hopefully they will calm down a bit. Tank isn't overcrowded or anything, but it's really impossible to get any pictures when they fly away whenever I come closer to the tank.
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