sai1
gills of fish

strokes 17
radical
strokes after radical 9
瓣鳃纲 瓣鰓綱 ban4 sai1 gang1
Lamellibranchia; class of bivalves

七鳃鳗 七鰓鰻 qi1 sai1 man2
lamprey (jawless proto-fish of family Petromyzontidae)

鳃弓 鰓弓 sai1 gong1
visceral arch (gill-bearing arch or its vestigial crease on sides of neck of vertebrates)

鳃裂 鰓裂 sai1 lie4
gill slit (in fish)

羽鳃鲐 羽鰓鮐 yu3 sai1 tai2
Indian mackerel