Just bought what it seems a mated pair,both fish keep close and in peace.
They look very "ungoby",due to their hovering in midwater,and their low set eyes and pointed terminal mouth.
They are slightly emaciated,and the problem is that they are reluctant to feed.

Nothing seems to interest them.I tried adult and
bbs,cyclopeeze,mysis,crumble...
They inspect algae covered walls and sometimes they pick at something,harp copepods or
bbs,like mandarins.Later one took an adult bs,but chewed it for a long time,as if it was too large to swallow.
And today one of them started picking something from the sand bed,straining sand grains thru the gill opening,like sifter gobies!
Somebody could advise about feeding them?