Mandarins are a great addition to any tank as long as you have an ample amount of pods for the mandarin to forage. I was lucky enough that when I bought my mandarin he ate frozen and live brine of the bat. I also have plenty of pods for him to eat but love the frozen and the live brine. I love that little guy, I have had him for 5 years now. To play it safe ORA has them and eat pellets if I'm not mistaken.