it's a Canon Telephoto EF 100mm f/2.8 USM Macro Autofocus Lens. some might be with the stock XSi Lens, but I am 99% sure all those were taking with the 100mm macro lens i mentioned.
Hmmm...that's really interesting. You are keeping the berghias in a floating breeder box? Let us know how that goes, I'll be interested to know if they stay in there. They should be able to squeeze through those slats without any problem, especially the babies. But they may stay there if they have enough food to eat.
they can squeeze out through the slats, however, with the netting in there, they stay put. we will see if the netting holds the babies.... I am not sure about that one.