The two first hid under some rocks. I had turned of 2 tubes so the lighting wasn't so bright. But after an hour or so they started moving around. Don't know if fish can feel happiness but the Panda I had from before surely did act like it was very happy. Especially towards one of the newcomers, they all moved in a group but it seemed to shadow one of them rubbing against it gently. Looked like he introduced the place to them

Will add pics later.