10000 is not hard, you must click your neighbor chest daily then select the most profitable fish, i manage to get up to 30000 now. :) if you need the full list go here
http://www.yayeasy.com/happy_aquarium/happy-aquarium-fish-details-and-profit/
Play happy pets & Happy aquarium on the same Facebook account and it should work.
Farmville, Happy Aquarium*, and Mafia Wars! (Happy Aquarium is my favorite!) :]
you can't
You can't.
Your happy aquarium neighbors post them for adoption. You can also get squids, and penguins from adoption.
Happy Aquarium.
Happy aquarium...
yes
mate your fish for coins or pearls
You can get experience also when you clean your neighbor's aquarium.
41$
If you buy and sale fish for a long time you can get coins