Blue Tang
Acanthurus coeruleus
<Click on image for magnified view.>
 
blue tang gills
 
Gill (100x). a) secondary lamella. b) cartilage of primary lamella.
 
blue tang gills
 
Gill (250x). a) epithelium. b) mucus cell. c) central venous sinus. d) cartilage.
 

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