Are frogs and fish indispensable to the balance of a Bioteich natural swimming pool?
Frogs are often found around natural swimming pools in the countryside or suburbs. Their croaking adds to the charm of the biotope between April and June. Fish are not at all advisable! They generate excrement which disturbs the biological balance of the water and its transparency. Some fish also destroy the aquatic plants (carp in particular). A few small white fish are OK to keep and will enhance the life of the pool (moderlieschen, stickleback, minnow, bleak, roach, etc).
