Quick sketch - betta fish

I don't always get time to sketch and draw with real world media, if I leave it too long I get very rusty. This is my first effort since Inktober - last October - so a bit rough. I'm keen to keep drawing fighting fish, it's a subject I've been thinking about in more detail recently. I think I can improve on the last effort I made on these species. If it goes well, it may progress into some apparel, if I can get it right.