Supercool! Thanks for postíng it.
I currently have 3 individual headstanders, two of them Anostomidae, and have had them for quite a while. - 1 Anostomus Anostomus, 1 Laemolyta sp. , and 1 Chilodus punctatus (Chilodontidae).
Love them! …. But they are not for every fish keeper.