its a 125 gallon, with plans to get a 300 wide so i think it would be ok. this may sound wierd, and i think it is, ive kept lots of bichirs, upper jaws only, senegal, various member of the palmas comlex, delhezi, ornate, weeskii and i have yet to find a bichir with the least bit of agression, i had them with zebra danios and they never got eaten, has anyone else had this experiece, totally community tank bichirs, i think my bichirs are the least aggresive fish i have in there, less so than the severums, anyone else have this????? oh, and they are about 9 inches long right now, my bichirs