Here is some close ups of 'a'.
This fish is actually the oldest of the 4. San sai if you can believe it.
As a low budget hobbiest with a small pond, all my fish are smaller than they should be. This little fella (lassie? I am not sure on thes 4 yet) lived
its first six months in my care liviing in a filtered plastic tub (before I built my pond). They were all put in such small quarters again last August when they should have been eating much and growing, due to a split pond liner that took weeks to repair. This year there has been enough growth for me to stop worring about serrious stunting.
'b, c, and d' are all ni-sai. so is blinky. yuki also spent too much time in a tub, he is san-sai.