Matis catching journey

[OrchidMiss]

I have one (different type) in a 15g AIO
A 5 or 10 would be adequate

 

[Stomatopods17]

tbh anything works for them.

Whatever size you're comfortable with, I'd keep one in a 2 gallon, they're hardy enough to handle the parameter swings. You just want to stick with glass and lay a piece of pexi/acrylic on the bottom as a precaution.