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. -----Original Message----- From: gsas-member-bounces@thekrib.com [mailto:gsas-member-bounces@thekrib.com] On Behalf Of Betty Goetz Sent: Monday, July 28, 2008 9:56 AM To: Greater Seattle Aquarium Society member chat Subject: [GSAS-Member] frozen bloodworms (was) Re: Was Bulk chemicals - now Salts...and fin rot in guppies... > 2) They never fed bloodworms. Paste foods that they made up (with much > secrecy about the formulas). Problem with frozen bloodworms is the filth > they're harvested from. I personally haven't had problems with the 'hikari > bio-pure' brand but i use it sparingly with my fish Gosh, I didn't know this about bloodworms. When I get them in my daphnia culture tanks, they seem like a 'clean' food as they are sqirming about in the water column. Seems 'clean'. Using frozen bloodworms is what I think killed my Dario dario and it's even more annoying since I didn't HAVE to give them bloodworms. I was just trying to vary their diet since they took frozen brine so well and I was short on live food at the time. Live and learn. And I'm not sure of the brand...whatever is sold frozen at Denny's Pet World. Betty Goetz _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member