@HDMI1 Naofumi used water close to seawater to match the fish, since the fish in this chapter is sea water one. "Sakana(fish) ni(to) awasete(match) kaisui(seawater) ni(to) chikai(close) ensui(saltwater) wo tsukuri(make)". Yeah, forgot the "salt" but everybody know that "seawater" had salt in it.