The County Administrative Board said the nightclub in Gothenburg, which keeps cichlid fish in tanks, was found to be playing music at 100 decibels, but laws require the music to be kept at 65 decibels or lower when pet animals are in the vicinity, Swedish news agency TT/The Local.se reported Tuesday.
The board said the music must either be kept at a quieter level or the club must obtain new aquariums with better noise protection.
The owner of the nightclub said the measurements were not carried out correctly and the fish are kept in a room separate from the music to protect them.
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