Tagging along. Are they peaceful? Would they bother a mandarin in a 6' 125 Gallon?
A 125g isn't really big enough long term. These fish swim a lot, and they need a lot of room.
Usually they'll be peaceful, but you'll occasionally get a more aggressive one, so be prepared to remove it if necessary.
Isn't a 150 the same length, or sometimes even shorter than the 6' 125g. I thought most 150s are 4'x2'x2'. Some sites list the BJT as good for 75 gallons. Obviously they are in the business of selling fish though.
Rockscape and footprint are very important, not necessarily total gallons.
For instance a larger cubish tank 4' x 2' x 18" for instance could work based on how the rock is used. If you pile the rock along back of the tank the fish isn't going to have nearly enough room to swim.
If that same tank was aquascaped to allow the fish more "3 dimensional" swim space it would more than likely be fine.
+1...same experience with mine...6 months, no problems (450g DT)I have a pair in my tank and they havnt touched any shrimp, hermits or snails. It will be fine and I doubt it will eat your inverts if you have any, just feed it regularly.