Do you see those glowing green spots on the northern horizon? There are two of them...both of those first rainbows are everywhere. pseudomugil mellis i havent seen bot there are signifer and tenellus.
purple spotted gudgeons are $19 each at the local aquarium shop. I personally like empire gudgeons and peacock gudgeons more.
Chlamydogobius eremius I am yet to encounter.
Rhadinocentrus I havent seen yet but could probably find
That's just my eyes feeling jealous.