I should say up front that there has been but one case that I know of where Otos were bred in captivity. They are very wild little fish when it comes to breeding and need a certain delicate condition and environment to do so evidently. It is a joy to own them however. They are some of the sweetest fish that I know of to own, as well as the fact that you would in effect be doing a rescue operation.
I would suggest that you read the home page about the lives and ways the Otocinclus catfish are caught and brought to us and how they are shamefully treated in the
LFS in most cases before you decide to buy or not to buy. I would let you know that while some do say that you need groups of 3 or more, I do have a tank with 2 little fellows who play very well together and love each other and are obviously very close. You never hardly see one without the other and there is a real connection that is apparent in them. I would say that it is important to buy what ever number you plan to have at one time if possible as they do seem to group together better if they have known each other all along. My tank where 3 are present has 1 that I previously owned and added 2 later. The 2 pal around and leave the 1 who was not one of their original grouping out on his own and he does seem to be totally content with that. So if you ever need to replace any of them try to do it in 2's or do not do it at all.
Their home page is:
http://www.otocinclus.com
I heartily recommend them as tank cleaners as they do a marvelous job of cleaning up algae as long as you do not feed them algae wafers and other things until they get the job done so they get lazy. They only give them half a wafer a couple times a week or they will follow the path of least resistance and eat the food you give them and let the algae grow. (as will most fish - why forage when you are feeding them so well)
Hope this helps.
Rose
