I do think there is something about frozen bloodworms that can be a problem Not sure what. Steev??? Now that I think of it, I lost honey gouramis to bloat after feeding bloodworms, and it may have been live ones from my daphnia culture tanks. I remember trying to remember (blush) NOT to feed bloodworms to gouramis. Seems that the same thing may have happened with my Dario dario. It happens very fast. They may be fine (no obvious symptoms) in the morning and bloated/dead when I get home. Maybe I need to stick with shubunkins/goldfish (weak grin). And yes, I did water changes regularly...that's why I like nano systems where a water change just take a few minutes rather than MORE TIME. scratching head.......... Betty Goetz > There two types in animal commonly referred to as "blood worms" one is > Tubifex (SP?) worms also sometimes call sewer worms. You usually get them > live from fish store. The other are true blood worm that aren't worms at > all but chironimid larva (insect Larva). Tubifex are harvested from > unclean > places but usually by the time they are sold to hobbyists they systems > have > been purged through lack of feeding and constant water changes and fish > love > them. The stuff sold as frozen blood worms are chironimid larva. They > come > from the bottoms of lakes and streams. They will not tolerate unclean > condition. Also most chironimid larva are cultured, not taken from the > wild > so are very clean. _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member