Yes we have fish! Under shops tab above go to the Creutair Coille shop and purchase an egg. After around level 10 your egg will hatch. Do you have fish as pets in real life?
You can go fishing in the Star Pond (under the game room tab) every 8 hours for new items.
Turquoise, although the Azure Beta fish would make a good (Albeit very rare, as it's a beta-exclusive) second pal. I'm raising the Turquoise one right now!
Windlyn is so fun, Windlyn is so grand, So come on everyone, All across the land, Come and join us now, In this awesome site, We will show you how, Talking through the night. ~npixelz