Several subspecies of the fire salamander are recognized. These are a gnome, an undine, and a fire salamander. The fire salamander can grow to be long. Samandarin or Samandarine is the main steroidal alkaloid secreted by the fire salamander ("Salamandra salamandra"). The pathogen, unidentified up to then, had devastated fire salamander populations in the Netherlands. They are dominated by the fire salamander ("Salamandra salamandra"), frogs and toads. The Corsican fire salamander mainly lives in the deciduous mountain forests of the island. Amphibians (fire salamander, edible frog) and reptiles (sand lizard, European pond terrapin) are also abundant. Another characteristic animal of the Kellerwald is the fire salamander, found here in its thousands. The Corsican fire salamander is threatened by habitat loss, forest works, road construction, and traffic. The fire salamander ("Salamandra salamandra") is possibly the best-known salamander species in Europe.