The Anatomy of a Betta Fish

The Anatomy of a Betta Fish (with Pictures)


(Click to enlarge)

Caudal Fin

The fin at the back of the Betta, usually called the tail.


Caudal Peduncle

Is where the Caudal Fin and the body meets.


Dorsal Fin

The top fin, on the Bettas back.


Anal Fin

The bottom fin, which begins from the anal opening and ends at the caudal peduncle.


Pectoral Fins

The two fins on the side of the Bettas body. They are just behind the gills.


Ventral Fins

The Two long fins that hang down in front of the anal.



(click to enlarge)

Gill Membrane

Is often called the “Betta Beard”. Properly named the branchiostegal membrane.


The gill covers

Dr. Winnie
About Dr. Winnie 1229 Articles
My name is Dr. Winnie. I earned a Bachelor of Science in Psychology from Duke University, a Masters of Science in Biology from St Georges University, and graduated from the University of Pretoria Veterinary School in South Africa. I have been an animal lover and owners all my life having owned a Rottweiler named Duke, a Pekingese named Athena and now a Bull Mastiff named George, also known as big G! I'm also an amateur equestrian and love working with horses. I'm a full-time Veterinarian in South Africa specializing in internal medicine for large breed dogs. I enjoy spending time with my husband, 2 kids and Big G in my free time. Author and Contribturor at SeniorTailWaggers, A Love of Rottweilers, DogsCatsPets and TheDogsBone

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