If we generously say that a polar bear nose might weigh a kilogram, hiding the nose still leaves 699 kilos of exposed polar bear. " when it comes to the cognition of fishes, our knowledge has grown exponentially in the last 10 to 20 years or so." Do polar bears cover their nose with their paw to hide?Īre quokkas really terrible parents? Are daddy-long-legs venomous? Is our coat of arms fashioned on fake news? Here are the answers you never knew you needed to some of the tallest and not-so-tall Australian animal tales. It lets us put them in small bowls and not feel too bad about it. Our growing understanding of fish perception is leading to a reckoning when it comes to animal welfare, he thinks. The Nordic countries are a bit more positive - it might be 10 or 15 seconds up there," he says. "I've lived in a lot of countries and they all have a version of this myth. The jury is still out on where the three-second myth came from, but it persists across the world, according to Professor Brown. Fish can remember, and avoid hooks and lures for about a year as well." "There are also some really good examples of hook avoidance in fish.
They learnt that in about 15 minutes and retained it for a year - and that's a fish that only lives for about two years in the wild," he says. "I trained a bunch of rainbow fish to find an escape route in a net which was simulating a trawler. ( ABC News)Īs a project early in his research career, he specifically looked at training fish and observing their memory retention.
Fish can remember being caught, and learn to avoid lures and fishing line.
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