Something worth noting about these popular subjects, is the following which I picked up from Wikipedia:
What are known as 'koi' in English are referred to more specifically as 'nishikigoi' in Japan (literally meaning 'brocaded carp'). In Japanese, 'koi' is a homophone for another word that means 'affection or love'; koi are therefore symbols of love and friendship in Japan.
The paintings shown here are simply entitled Koi no. 1 (above) and Koi no. 3 (below) - both 760mm x 550mm