I have this 7cm lda63, sometime it stick it's nose above water, like it was sucking on the glass in the air. Other royal plec in the tank is healthy. Only this one is not active in eating. The fish did not suffer sunken eye or belly, but looks quite slim.,hanging on the glass most of the time, and swims rather slow. Did not seem to improve for quite some time senice it was introduced to my tank. Any experience with this? Thanks.
Larry
Larry