Could this be Cory spawning???

[gunpilot]

About 18 hours ago I did a 90% water change in a planted 5 gallon tank that is home to two Cory Paleatus and 10 9-day old guppy fry. The Corys are young, I think, only about an inch and a half long. About an hour ago they started swimming all over the tank but expecially up and down the sides. I know that huge water changes can start a spawn but I wouldn't know a spawning catfish from .......

Are my guys up to something here??

 

[cloud]

sounds like normal cory behaviour to me. Both my Strebai and Bronze run up and down all the time.
If they're spawning the male and female from a kind of 't' shape.