what little/weird things spark breeding in your fish?

[Hybridfish7]

for me the (in my opinion) unusual things to induce breeding in my fish are
(for aphyosemion australe) feeding frozen food and then doing a waterchange.
(for amatitlania nanolutea) traumatizing them. either redoing the tank with them in it or moving them to another tank has caused them to spawn.
(for black skirt tetras) turning a powerhead on for the first time in their tank. I know black skirts aren't the hardest to breed but I thought it was pretty neat that they started spewing eggs all over the tank as soon as I put a powerhead in there. I don't have them anymore and the eggs never hatched of course but it was still pretty neat.
my elassoma get excited whenever I refill their tank with a watering can, I guess they think it's rain.
that's about it, what interesting things have you guys done to get things to breed?

 

[FJB]

Not actual breeding but attaining 'breeding coloration' and 'courtship behaviors' (sometimes with spawning and breeding by some) -
A large water change usually elicits the above changes in my 4 tanks (silver dollars, rainbows, cories, South American characins)

 

[Deadeye]

I accidentally bred goldfish a while ago, not sure what I did that sparked it though.
Otherwise I’ve only bred kribs and a bp x convict pair (no fry yet). Water changes seem to get them wanting to breed.

 

[Polypterus_36]

A large water change always sparks my pair of tiger oscars to spawn.

 

[Milingu]

I had a pair of Hemichromis start started spwaning within an hour when I played music really loud.
Maybe they thought its a thunderstorm and rainy season is starting.

 

[Pterophyllum sp]

Food. High quality frozen, and all the live you can find works for 90% of the fish I play with. The other 10% require some temperature and pH swings in addition to the food to get in the mood.

 

[duanes]

Have induced breeding in many stubborn species, by adding cooler lower pH rain water to the tanks.

 

[eon aquatics]

i hope my tetras breed
there are lots of hiding places and im going to buy multivitamins for them as well