The gender of the Ainos Ponies released was random. You could either have gotten a male or a female Ainos Pony.
Ainos Ponies have to be tamed before you can train them, this can be a long and difficult process (since he/she may choose to not obey you) but after you get your Ainos Pony they can reward you up until the time they are 80 years old with a bunch of diamonds. The quicker you tame them, the higher their GP will be.Edit
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