A few months ago, I had just one long fin danio in my 72g because I had just moved him from the 10g. He was bothering my fish and I wanted to give him to my friend who had several in his tank. When he was over, he was looking at one side of the tank at some other fish. I had an idea, maybe if I put the littlest part of the corner of my net in, the danio would go over to it thinking it was food and I could scoop it right up. Well, I put the corner in and as anticipated, he went over to it and I scooped it up at like 2346546 mph. My friend was like, "HOLY CRAP!!!!" because he was just looking the other way and heard a splash and saw how was I moved. Try doing the same thing, putting the corner of the net in and then when they come over, scoop them up incredibly fast.