While Electronic Arts has been busy monetizing nearly every facet of its Xbox 360 releases, from tutorials to unlockable items and cheats, a Japanese developer has stepped up to try and take the crown away from EA. 1up reports that Frontier Groove, publishers of AquaZone recently released 18 new fish for their aquarium simulator to the Xbox Live Marketplace. Should a user wish to purchase all 18, the cost will run over 5000 points, more than $60. 1up also discovered that the size of each download is the minimum size allowed by the Xbox 360, 108K, which strongly suggests that gamers are paying for content that is already on the retail disc. Interestingly, AquaZone has been one of the weakest supporters of the Gamerscore program, and is probably one of the reasons that Microsoft is enforcing new standards for that as well.