spoke too soon, I now noticed that I am missing one guppy. And one of my cochu blue tetras got a suspicious looking large stomach... I looked all over and can't find the body. :facepalm:
The other 3 guppies are fine though...
Just an update, they are getting on fine.
My tank already have 6 cochu blue tetras, 5 penguin tetras and various gouramis before. Got 4 fancy guppies over the weekend and they all just mind their own business. :lol: