02. Living fossils (23)

  • Acipenser ruthenus – Albino

    19. December 2007

    The Sterlet, Acipenser ruthenus, is one of the smallest species of sturgeon known so far. However, even this species can grow to more than one meter in length. The biggest specimen known was 125 cm long, but around 60 cm is a more common size. Like all sturgeons this species is endangered due to overfishing […]

  • Polypterus teugelsi

    6. July 2007

    From the Cross River system in Cameroon originates Polypterus teugelsi. This 2004 scientifically described species could be imported in this spring for the first time. They exhibit a black network, which covers an olive background on the dorsal and dorsolateral surface of the body. This and their brightly orange colored belly are singular in bichirs. […]

  • Acipenser ruthenus

    6. July 2007

    The Sterlett is a smaller sturgeon species from Eastern Europe, it origins in tributaries of the Black and of the Kaspian Sea. It occurs in the Danube, where it ascended in former times up to Ulm, today there are occasionally catches up to Passau. Their shape and swimming behavior reminds on sharks, but there is […]