i wouldnt because the aro would most likely eat it. Especially since that teugelsi is so small and looks like a worm. plus the fact that bichirs need to go to the surface to breathe, which can make it an easy target for the arowana
If I put it in a 35 gallon tank for the meantime, until how many inches can I put it in my main tank with the silver aro, endli and ornate(both 11"), and giant gourami(11")?