Ichiza offers a good variety of dishes, however, non really stood out and wow me. Quality is above average.
We had the live fish three eats which consisted of sashimi, nigiri, and choice of fish bone miso soup or fried fish bone. The kinds of fish they brought in from Nagasaki were mostly white fish like breams. I prefer the softer melt in your mouth kind like aji. The fish was quite fresh, however, unlike yellowtail or aji, whitefish typically lacks in flavor. It was very mild. The fried fish bone was a disappointment as it wasn't deep fried enough that you can eat the entire bone. I ended up with a mouthful of bones so I would not recommend this but chose the fish bone miso soup instead.
Other dishes I recommend would be the fried squid cartilage, broiled squid, and salmon kama.