Re: Orange Otos
Guys, I'm also maintaining a small group of Nannoptopoma sp. Peru (aka Orange Oto) and doing well on blanched zucchini, peas and tubifex. In a way, I'm regretting not putting aside a group of Parotocinclus sp. Peru (aka Tiger Oto) when I had access to them. Both of them can be sensitive but it gets easier if kept cool or sub-26ºC.
A late welcome to you, Frank, and thanks for sharing your experience in AQ.
Corydoras species is not my forte but they're interesting enough for me to want breed them. I've done a few but not quite as many as you and Kim... but I'll try to catch up! 
I'll be all ears when the Nannos spawn for you.
I'm back & keeping 'em fingers wet,
Ronnie Lee
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