Never kept ottos before so i bought 4 a few days ago.And what a lovley little fish, settled in really well they seem well at home in the tank grazing on the rockwork, bog wood etc my question is ive been putting blanched cucumber in and alge flakes in. Which they seem to ignore, then i take them out again in the morning.There is no probs with them and seem happy enough i just want to keep the little fellas healthy.