I do something similar and catch them in a very fine net, bring them to just beneath the water surface, and then release some bloodworms in there. Whatever they don't eat just goes into the tank for the betta and cories to find. They're starting to learn that white net = food! :)
Romeo - HM male | Tzekel-Kan - DTHM male | Nemo - CT(?) male | Akio - DTHMPK male | Ares - Delta male | Diablo - SD male | Nameless - VT male | Nameless - DT female
The Fab Five: Green cory catfish | Maximus: Golden mystery snail | Ichabod & Rosa: African dwarf frogs
Swim in peace, Gaston.