Just about all my fishless containers (water lily above-ground 'ponds' etc) outside have freshwater copepods now and those are pretty teeny. I'm sure they are small enough for cichlid fry. Swishing the net around the edge of the container and everting the net into a water-filled dish usually gives me enough to feed my live-food eating fish daily. I use an eyedropper to capture dropperfuls of critters that congregate on the side of the dish closest to light. These copepods seem to like to cling to the side of a container rather than hopping around the water column like daphnia. I've got some daphnia, limited numbers of bloodworms and a few mosquito larvae which showed up in the cultures as of last week. Spring is coming! I got my initial copepods from: http://www.aquaculturestore.com/fwinverts.html but don't know if they are a critter that just shows up eventually in outside water like Cyclops. I have trouble doing the worm-thing unless it's a non-white worm like tubifex. I've got these long thin reddish worms that showed up in my water-lily ponds that seem to like old Japanese maple leaves (at least that's where they seem to congregate). The fish like those as well. Betty Goetz (who is NOT a freshwater invertebrate biologist....weak grin) _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member