Science Questions

Sat, 9th Sep 2006

Part of the show Hot Nectar, Warming Weather and Birds Missing the Spring

Question

Peter in Godmanchester asked:

Do fish fart, and if so, where do they come from because you don't see any bubbles?

Answer

Fast repetitive ticks, which is where they got the name from, is fish blowing tiny bubbles from this structure called a cloaca at the rear end. They release these things in pulses at a certain rate and it's believed to be like some form of communication. Communicating by fish farts - fantastic!

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