Thanks for the reply Monica - I am glad you like it.
Being so tightly packed with plants from front to back it is impossible to know how many babies there are. I can only see them when they walk among the ferns but I have to admit that I have only ever counted 10 on view at any one time which is surprising. I suspect a proportion of them do get eaten but now there always seems to be a new brood every few days.
Yes, that is often what one gets when you employ the "survival of the fittest" method of rearing. I often raise fish this way, a bit cruel, but it ensures that the survivors are doing quite well and are very strong. Tetras will just about eat anything, but I'm sure they love the live baby shrimp.
The tank is lovely. I'm a huge fan of moss and Crypts a you have plenty of those plants.
llj