I've never been able to catch my blue gourami. She is the biggest I've had, I thought that would mean easy to catch, but nooo! LOL
She even thinks a net is coming near the tank and she's off! haha
I finally gotten fairly good at catching the bettas, they are quite funny, some I can just scoop in my hand and others must be chased down and stressed out and tricked into a net. You'd think they'd learn there is an easier way lol.
The 2 hardest, that I've actually finally caught lol, were 1. a molly, and 2. a platy fry about an inch long. I chased the molly for 4 hours with no (good) results and finally recalled reading about making a trap to catch a fish. The next day I had her in the trap thank goodness!
The fry took endless hours of trying to catch and 2 traps before I finally got him lol. That little bugger annoyed the heck outa me lol!