I did, and still do appreciate the comments, and in days to come if first few spawns fail I will get them their own 20 liters cube, or two if my father will be willing to participate in project.
These Paros are not wild ones. They are aquarium bred and I would never risk such a setup with F0 fish. I want to breed them, but I also want to see for myself how this community works. If, and only if, it is succesfull, than I will be overwhelemed with joy. If it fails – not a big problem, becose I will be able to match them and find the best pair suited for breeding. I could probably even try to create a rotation breedery, where I could breed a pair intesively for some time, than allow them to take a ‘longer vacation’ in a community tank.
I believe that this bigger tank is a good place to let them grow, learn their share of survival and then allow fish with proper behaviour to breed and – eventually – sell/give them to people willing, and able. Male who had to endure harsher conditions in a community tank should be better at bringing more fry up.
Wouldn’t a male able to raise offspring in such an aquarium be far more precious to the community as whole than those who aren’t?
It will be also usefull for studying them, and their behaviour.
I believe, that whatever happens it is a win-win situation.