I have been listening to all these frequencies all day on headphones and with speakers pressed against the aquarium. It is not too dangerous. This frequency,
Parasites enterobius vermicularis HC 1048-51 Hz
however, agitates the fishes a lot. In human, this parasite is called pinworm. Maybe, fishes sold at aquariums should be free of all diseases and parasites. Otherwise, an aquarium not kept properly is unhealthy.
Expensive fish, anyone.
