No black worms, but I did feed tubifex and brine shrimp. The freeze dried. Actually, one time the fish were picking at an area in my rocks. I think live tubifex had hitch hiked with my plants. Their were clumps of the worms in my gravel. I would actually put my hand in the water, pull some worms out of the gravel with my finger, and the my discus would eat right off my finger, until the worms ran. I didn't know tubifex were hitchhikers, but I saw a photo of live tubifex in the Baench Freshwater Atlas. That's what it was.Ever feed yours live blackworms?



