06-17-2009, 01:34 AM
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Keep an eye on your water parameters as otos are notoriously sensitive. Also, in my experience many otos will not eat prepared foods, even ones rich in algae content like spirulina based flake and algae discs. You may need to feed fresh greens such as romaine lettuce, spinach and cuccumbers or, if your otos are super picky, provide a steady supply of algae for them to graze on. An easy way to do this is to get a dish, place some flat, aquarium safe rocks in it under water, add some flake food to provide ammonia and put it on a windowsill. Algae will grow on the rock, which you can then put in the aquarium. You can keep two or more rocks and have a rotating supply of them to keep your otos well-fed.