It never ceases to amaze me the interesting things that fish do. In this 150G SA biotope tank, a pair of 'rotkeil' Severums and Chocolate cichlids laid eggs about 30 cm (1') apart, the Severums on a small piece of Malaysian driftwood, and the Chocolates on a small rock. Both batches of eggs hatched within a couple of hours of one another, and the Chocolates transfered their hatchlings onto the same piece of driftwood less than 15 cm (6") apart. Both sets of parents are totally calm and peaceful about the situation. I had this happen with two species of Severums. Pairs of efasciatus and notatus spawned on the inside and outside surfaces of the same flower pot. So the eggs were separated just by the thickness of the wall of the pot. Also , two pair of Madagascan cichlids, P. polleni and P. oligacanthus spawned on opposite sides of the same piece of driftwood. There were plenty of other places in the tanks to spawn. But close proximity doesn't seem to phase them. In fact, the male Chocolate seems like he wants to look after both spawns since he situates himself half way between them most of the time.
[video=youtube_share;1XFL4pCDiAo]http://youtu.be/1XFL4pCDiAo[/video]
[video=youtube_share;1XFL4pCDiAo]http://youtu.be/1XFL4pCDiAo[/video]