We all love Cognitive Sciences Stack Exchange, but there is a whole world of people out there who need answers to their questions and don't even know that this site exists. When they arrive from Google, what will their first impression be? Let's try to look at this site through the eyes of someon...

As larva, zebrafish is transparent, at least tip 5-6 days. I wonder what would be the upper limit age for such transparity, considering for purpose of imaging. (For normal zebrafish, not special transgenic breeds) Thanks!