Click to Harvest!

Happy Aquarium added a little more variation to its fish shop earlier this evening, with the addition of two new jellyfish. The Comb Jellyfish unlocks at level 15, and is available for 65 coins. The Blue Moon Jellyfish, on the other hand, is a special case. It is found on the “specials” tab – where the paid items normally reside – but it’s also for sale for coins. Nice! It is much more expensive though – it’s for sale for 850 coins.

One detail I like about Happy Aquarium are the little descriptions each shop item receives. It’s a nice touch. The Comb Jellyfish states “Most stylish fish in the tank with its snazzy hair-do.” Blue Moon Jellyfish “Loves hanging out with her cousins, Orange and Comb Jellyfish.” Note that despite the “her,” the Blue Moon Jellyfish can be bought as either a male or female.

(click for full-size)

Just as I predicted over the weekend, Happy Aquarium from Crowdstar introduced three new fish, this morning. See-Through Damsels, Pink Mandarins, and Three Stripe Damsels, in both male and female varieties, are now available.

The Three Stripe Damsel is unlocked at level 17, and is for sale for 79 coins. The See-Through Damsels are unlocked at level 22, and cost 109 coins. The Pink Mandarin is unlocked at level 32 and is for sale for 398 coins.

Pretty nice of Crowdstar to allow all three to be purchased with in-game currency, if you ask me. Crowdstar is so generous with free items in their game, I have to wonder if they’re able to make as much money as some of the other popular Facebook game developers.

Happy Aquarium players wishing they could add a little more color to their happy virtual fish tanks had their wish granted, this weekend. Crowdstar added a host of new bright and cheery gravel options. Green, maroon, orange, purple, silver, yellow, and red gravel is available in the Happy Aquarium Store now.

You might be thinking to yourself that news like this is pretty darn small. I mean, new gravel colors? I can certainly understand that perspective, but ultimately I disagree. I think things like this are hugely important. It was new gravel today, but it will be new types of fish tomorrow, new game mechanics the next day, new items the day after that. Facebook games very gradually reinvent themselves, one small addition at a time.

Social games are simply more fluid and enjoy a faster rate of change than any other type of video game that preceded them. So, you might see some new gravel colors. I see the evolution of an entertainment medium.

I for one welcome the competition in the Social Aquarium Game category. It makes both companies work that much harder to earn our attention. Fishville is now sitting at 6.9 million daily players, and Happy Aquarium is at 6.4 million. Things are heating up! You can be sure both Crowdstar and Zynga will be rolling out updates fast & furious in order to gain new players. And SocialGameCentral will be here to run it down for you.

Case in point: Crowdstar added seven new giftables to Happy Aquarium late last week. Lace White Coral, Red Anemone, Orange Chimney Coral, Pink Tipped Anemone, Acropora Green Coral, and more.

Hit the jump for a full gallery of all seven.