Real Berliners are tough, right? This perch here is one of them. That fish is a survivor! That’s why it still lives in the river Spree. It’s a pretty dirty environment that many species couldn’t cope with anymore. But this guy couldn’t care less. So, he became one of the most common here. All he basically needs is enough oxygen. As a predator he eats smaller fish, sometimes even a fellow of his own species. Well, I am a though place, right? But I actually do have a lot to offer: I'm a green city with very beautiful parks, meadows and forests. Nature thrives. Experts estimate that around 30,000 species live here: you might even see foxes at the Chancellor’s Office and raccoons in the city centre. But I must admit: I'm not a very clean city, particularly my rivers and lakes pose a challenge.