Xanthic Course

The search for the x-word for  A to Z Challenge is the most challenging.
It was additionally difficult for me this time as I have written a haiku based on a photograph I have myself clicked, for each of the alphabets.

The word for X this time is Xanthic.
It denotes a colour that is yellowish.

Next, find a pic with a yellowish element.
This one caught my eye. It's a fish being navigated by a yellow tail.
This photo is clicked at Aquaworld at Singapore.

fish looks ahead
smiles and excitement
-xanthic course