Do you know that Fishville allows you to comment or should I say recommend a friend's tank?
If you see this "Thumbs Up" sign, go click on it. Again, as a Fishville feature, it appears only within 24hours per friend. It does not appear in friends who do not play regularly.
Once you click on that sign, you will get a popup message. Usually I just send (publish) as it is.
You will receive this message on your Facebook (FB) wall, your friend too.
If your friend clicks on the "Collect your bonus" then there will be a reward for your friend :)
Gain points for your Fishville!