Buy Blackworms on Amazon (paid link)

In search for the best live food for fish I came across California Blackworm.
Check videos on this page for details on culturing Blackworms in aquariums.
I also have on other pages videos about different worms and critters that I kept and cultured in my aquariums.

Where to Find Live Blackworms

Culturing Blackworms from a Single Worm

Blackworms First Aquarium

Where to get Live Blackworms