This is your stocking plan since you asked for one
5.5 gallon
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1 Betta (Yours)
2-3 Oto's
1 Amazon Sword
1 Anacharis
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Here is a picture of my Amazon sword, before and after liquid ferts were being added on a weekly basis, decide for yourself if you'd like some
the sword will "melt" away almost or perhaps all of its leaves, dont worry, thats natural, they will return a couple days later, the Anacharis needs liquid ferts to get it goin pretty well, mine died without liquid ferts. For the oto's your best bet would be buy some Zuchini and put a horizontal slice about 1/4 and inch in length in for them as food, im pretty sure you wont have enough algae alone to support them and they 98% wont eat Algae wafers. Hope thats what you wanted to see. Good Luck
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