Science Questions

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

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!

September 2006