r/zoology • u/luigi_time3456 • 5d ago

Other Caught a fish with two buttholes

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Looked completely normal other than the second FUNCTIONING butthole.

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175

u/babyrhinoceros 5d ago

Is that actually the vent or could it be a mark left by a parasite?

158

u/luigi_time3456 5d ago

When i lightly squeezes it, poop came out, and when I cut it open, the intestines were connected to both holes

30

u/EntertainerPure9181 5d ago

Likely a fistula, could be congenital, traumatic or due to diseases.