Otocinclus
- Thread starter Jellymolly44
- Start date
My aquarium is a 75 gallon aquarium that is over 3 years old. It has a lot of algae on the glass right now so they won't starve. I don't think.
depends on what kind of algae you have on your glass. Oto's only eat certain kinds. It would probably be a good idea to do some research on what kind of algae it is and if oto's eat it. But, with a well established 3 year old tank, if you supplement with zucchini a couple times a week, 3 or 4 of them would probably be just fine in your tank. Make sure you buy healthy oto's, check to see if their bellies are nice and rounded or sunken in. Don't buy them if they look starved; they probably won't live long. Good luck!
as long as they are in groups they should be fine. 3 is usually the minimum, but i have mine in a group of 2 and they seem just fine. They have nice big tummies ! 
