As you start playing Fishville, it can be a little overwhelming. There’s a lot of Fishville tips to learn, but the faster you earn coins and XP, the quicker you’ll move higher up the levels.
Here’s a breakdown of the Fishville fish you can buy as you’re starting out:

Mini Dart Goby – These are the fastest-growing fish – as long as you feed them, they’ll turn into a junior fish after 5 minutes and then you can sell it.
Shy Hamlet - The Shy Hamlet grows in 4 hours and can be sold for 89 coins, almost 3 times what you purchase it for.
Hawaiian Hogfish – These grow in 12 hours, so make sure you’ll be around to sell it when it’s fully grown. If you only plan on playing the game for 1-2 hours a day, this isn’t the fish for you.
Scooter Blenny – This one takes a full 24 hours to grow – it’s a good choice if you plan to play around the same time each day.
New! Longnose Butterfly – This grows in 1.3 days, so it’s another great one to have if you know you won’t be around the game for a little while. After you buy it, you don’t need to come back and feed the fish for 2 days.
If you hover your mouse over each fish, it’ll tell you how soon to come back to feed them. Be sure you time it right, or they could die and you’ll miss out on coins and XP.

For the ultimate Fishville tips, including the fastest ways to level up in the game, check out this in-depth Fishville strategy guide. It gives you the beginner mistakes to avoid, which fish to raise that will earn you the most coins, and more.
New! Fishville just added even more fish you can purchase. Here’s a quick look at what’s available:

Orbiculate Batfish – This fish is one of the more expensive, at 2 sand dollars. It grows in 6 hours, so it won’t need your immediate attention, but make sure you can come back and feed it in 10-12 hours.
Purple Firefish – As of right now, this is the most expensive fish available in Fishville. It costs 3 sand dollars, but will score you a LOT of XP when you sell it. It’s also a good one if you don’t have a lot of time to spend on the game because it takes 2 days to grow.
Blackfoot Lionfish – Buy for 2 sand dollars and you can leave it for at least a day without feeding.
Klunzinger Wrasse - Info TBD