This three year old pair of pasionis have spawned, a rare occurrence for them, in that in the time I've had them (and another pair in the same 90G tank), there have only been a couple of spawns from each pair. I do keep them cool on purpose for their general well-being (~24C) so this may have something to do with it. Right now in their tank the temperature is a little warmer than usual so this might have stimulated them to breed.