I find the image of swimming fish so calming, the whimsy of the flowing fins, the ying and yang of the background (fluid) to the Fish (precise). 
This will probably be the start of a series... so serene whilst painting this watercolour. 
Painted with Winsor & Newton watercolours on 300gsm Fabriano paper.
24 x 19 cm, Ready to hang. Commissions are most welcome.