Depends on what color your channa has as base, using the lights thats for that color base would enhance its visually to you, and wouldn't really have any real effect on the fish's actual colouration. I use red base lights for my red marulioides. And will be getting blue based lights for my aurantimaculata when it grows up in size. The light i used is a china based brand called jiyin(吉印) not sure if you can get it if you are not in SEA or china tho