Transferring fish to new tank

[Reaper_Six_Four]

dang these fish are fast. I’m having a heck of a time catching my clowns. Yes, I have rock in the tank. Any pointers on how to catch these guys? I’m trying not to stress them out too much. Thanks!

 

[LosReef]

Fish trap
Just an example. They're also useful to introduce new fish.

SaltwaterAquarium Acrylic Fish & Pest Aquarium Trap 6" x 4" x 4" https://a.co/d/ed0bfCL

 

[Dave1993]

Drain the water out the tank