Yep, non-photosynthetic so you need to target feed it. Also likes medium to strong currents. Cant remember light requirements.... Have it in one of my books, but that book is apparently in hiding at this moment. Yours looks great!
I feed him marine snow daily with a turkey baster. Plankton also.
I keep him directly under powerhead and in the "shade". He's in
a 20 gal. He was in my 40 gal but was not happy for some reason.
Maybe too much flow. Who knows. Stays open a lot.