Note, I'm just starting to research this as well, but based on what I'm finding so far, the conditions needed for breeding differ slightly for each species. For imbellis, a few differences from splendens:
- Imbellis can be kept in pairs full time in a 10 gal tank with lots of cover and plants.
- Imbellis prefer slightly cooler water than splendens, mid 70's to low 80's maximum
- Spawning is very similar to splendens, imbellis are bubblenesters, and I think the female does not need to be removed from the tank after spawning?
Also sending you a PM with a link to more info.
I am considering getting a wild pair myself so I will definitely be subscribing to your thread! How did you decide to go with the imbellis? I have been looking at some smaragdina and mahachai pairs, but if you end up with babies for sale I would totally be interested in a pair from you.