01-25-2007, 08:55 PM
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I've purchased 9 otos in the last year. I have 4 left. Two of them are huge for ottos, at nearly 2". the other 2, my most recent acquisitions, seem to be doing well. The problems with ottos are 1) that they are sometimes finicky about eating anything other than algae, 2) they seem to be particularly sensitive to fluctuations in water parameters, and 3) they sometimes come in bad health, and then just kick the bucket on you.
A healthy otto will have a pot belly. They will look like they swallowed a jellybean.
Get at least three, and more is better if you have the tank for it. They love to hang out on plant leaves. Right now, one of mine is chilling on a hygro leaf that's just a hair bigger than he is, but they pretty frequently clean algae off the leaves of my sword plants.