I can not versthen the least negative reviews. Anyway, I and my sister love our new friends !!! Although we kept not quite to the instructions it seems our Crabs good to go. We have a pool gößeres than in the Set send so they have more swimming space. Decorated with sand and shells could then go off and after 2-3 days it began to twitch at last. Finally, some were almost 2cm long. Short life-existent, at least not with us! Our lived only a 2.5 months. So those were the only with this product to 2 stars have to be not very lovingly handled them rated! :( Poor animals! The set is suitable for animal lovers ages 7+. Hint: Never put into the pool! Every 4 days a pinch feed! Daily with the pipette pump air into the pool!
Another advantage: Thick-shelled eggs, that they adhere to the country for several years!