Anubias & oto questions

In the future I would like to move the two anubias plants I have. They have
well developed roots. What is the best way to do this? Will moving them
upset them much? Should I trim the roots when I move them.

Otocinclus question -- I have four in my 48 gallon tank and they have
always done well. They are large now but I keep thinking they have died
because they are so hard to find. I have seen 3 recently (with very long,
diligent searching) and I'm sure the 4th is in there somewhere. They used
to be out and about all the time and easy to see. Is this normal behaviour
as they get older? Has anyone else noticed this?

in Vancouver where the clouds are gone again