I think Sakana means fish.
I found gold silly. But strong. Let's see how he evolves in the next episodes. And how he will interact with the other shinkengers. And we already have Chiaki as the fool. I wonder what part he'll play. And his design was a bit too flashy.
The sushi themed changer looks silly, but the producers are trying hard to make a true japanese themed tokusatsu, so it fits. His fish sword wasn't that bad, since it is different from the others, who fight more or less the same way.
I didn't liked the iai thing though. I mean, iai is a sword thecnique and it didn't appear in the series. But with his unorthodox fighting sytle it seems off...
I wonder how he'll use mojikara without a shodophone. his changer doesn't seem to have a paintbrush.
I look forward to the Squid armament. And I also noticed another origami next to the squid origami. A golden one. I wonder when he'll use it.
I liked how Takeru handled the ayakashi, he is just too badass. And even when all the others were useless he helped. A pity that they make him a bit weaker and stupid in some eps, doing things such as using fire against a fire ayakashi...
The ayakashi was very cool and interesting. And kinda powerful. unfortunately, shikengold beat him easily in his debut battle, just to look cool. I wish they hade saved it for a future episode, because he had a lot of potential.