This week on The Conduct Science Podcast, join Mitch and Tom as they explore the world of fish! Tom starts off strong with his anti-vaxxer experience, but many tangents are here to follow. The boys move on to exciting space news that could point to evidence of life on Mars and an update to the James Webb Space Telescope. Fish... what are they? WHY are they? Find out here as Tom explains how gills work and how fish are categorised based on their movement. Mitch explains to us how the word "fish" even came to be and that if you were lazy enough even a hippo could be called a fish, he goes on to explain that fish can feel pain and emotion and the often... unethical ways that we came to discover this information. Tom rounds out the show clearing up an old debate about whether sunfish are the most useless fish on the planet or not. Make sure you listen to the end for this dramatic story and Mitch's verdict. Let us know what you think on Twitter! Music: MOKKA music