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In addition, adult males have very long claspers that reach past the anal fin.
en.wikipedia.org This accommodates the anal siphonal notch, commonly known as the turrid notch.
en.wikipedia.org Anal sulcus is shallow, wide, directly in front of the suture.
en.wikipedia.org The adult has tall dorsal and anal fins, vertical blue lines on its sides, and small blue spots dorsally and ventrally.
en.wikipedia.org Even if the enema is successful at dislodging the impacted stool, the impacted stool may remain too large to be expelled through the anal canal.
en.wikipedia.org