i like the point you are making, and you are right, herps arn't social, at all and they like to have as much space as possible. however, i don't think that the reason your frog died is becasue it wasn't in a big enough tank. and i'm also not sure those green dots had anything to do with it. i coulc be completely wrong though. but other than not being in a big enough tank and green dots killed your frog, what was the more scientific reason for it dieing. cause 40-50 gallons is plenty for 2 whites. i know tons of ppl. that have kept them for 10 years in a 10 or 15 gallon tank.