Live mosquito larva, scuds, baby brine shrimp if they care (I've had some like them, some not), can try harvesting grindal worms. Some others do flightless fruit flies.
I stick with mostly frozen and pellets, because I'm limited on live food options. Used to do live mozzie, but shared backyard and neighbours kept dumping my mozzie water bucket and then decided to start spraying pesticides so I'm out of luck on that front now lol
I've heard of some people even doing ant larvae. I raise ants as pets, but too slow a process for it to be a sustainable food source imo so hey could be easier collecting wild on that front. Ants themselves, some have stingers so best avoid those, and might be a little iffy for bettas. My old rainbowfish went bonkers for ants though lol
Thank you lovely!
What do you think about live mealworms, if I find one in there that's small enough for a betta mouth?
Not culturing them (yet, although I did culture some as a kid for a different pet, with my dad helping, and they were easy!) just picked up a container of live mealworms at the reptile section of a chain store while I was getting other pet supplies, thinking I'm sure some of my fish can handle and would enjoy them, even if I need to dice them up first. But would like to try some small whole ones on Levi and the mollies at least, see if they go for them!