[helene schoubye]

I can see that in some way its quite interesting what will happen – but on the other hand 🙁
Stefanie, – first of all, – lets say they develop, – which I also doubt – but if there are already quindecim fry in the tank, these will be quite different in size by now. You will be able to see which are which.
And then I would also say, – if it was me, – I might interfere now. There might be eggs but they havent developed yet. And I would say, do you want to really go on and take the risk they do develop ?
If you destroy whatever nest, and fix the ‘lady-situation’ – theres a good chance the male will mate again tomorrow and have new eggs hatching.
I dont know if there is any knowlegde regarding whether it is possible for these fish to interbreed, if theres no knowledge you could say it is valuable information. But I would think this situation would have likely happened before, so there must be some knowledge.
Quindecim is such a different species, I doubt they would be able to interbreed.