I have had my Celestial Pearl Danios (Galaxy Rasbora) for about a month. I recently did a re-scape of their tank and the good news is they looooove it. But I am confused. I have read everywhere that they like still water, but not mine. I moved my hob filter from the middle to the right side because I felt like they were struggling against the current when I fed them. I looked over a bit later and they were surfing the current! They would all swim over to the current in a straight light and hold until they all got there and then stop fighting in at let it carry them to the other side of the tank - then do it again. I watched for ten minutes at least while they did this non-stop.
By the way, they are loving their coconut huts, I have never seen them take to anything like they have with these things. It looks like they are playing musical chairs with them.