Ah, that's a rice plant?
Granted, I've never actually seen one underwater >> (I suppose next time I visit my ยาย I'll tag along with a few uncles to the rice field and look underwater with some goggles, lol.)
But really like it. It's different than the usual art I see, which is either a betta with no background, or a betta with a tank background... xD
Natural environ is pretty refreshing... makes me want to draw something like that. :D