iron and eggs

[Frauley/Elson <fraulels@minet.ca>]

Hi all,
	I recently set up your basic, geographically incorrect community tank
in my living room. It's first and foremost a plant tank. I added a pair
of  apisto cacatuoides Rio Ucayali and half a dozen Nanacara taenia, as
I have lots of young and am not worried about spawning these fish. 
	3 days ago, I added an iron supplement for my plants. The taenia have
gone from being a curious but drab fish to absolute striking coloration.
3 females spawned within hours of each other yesterday, as did the
cacatuoides. All of these fish, bar one pair of taenia, hadn't spawned
in months.
	A local plant guy once told me about Anomolochromis thomasi always
spawning after he'd added trace elements (his own secret formula..) for
his plants.
	Has anyone out there seen similar things?
- -Gary

ps - the fish are in tap water pH 7.4, 130 ppm.