I don't know what came over me, I was listening to my iPod and then figured that maybe the fish could 'feel' the vibrations of the music if I held the earphones up to the glass. They seemed to like it!. I played them three songs and watched their reactions, the first two songs I played went down well ("Don't Call me Whitney, Bobby" and "Rough Gem" by Islands), the tetras swam in close proximity to the buds and one of my angels kept his distance but didn't mind, my gold ram loved it and stayed next to it for the whole six minutes in total. The next song I played was "Put a Penny in the Slot" by Fionn Regan and that turned them right off... I've sort of come to the conclusion that my fish have music tastes :idea:. Has anybody else noticed this?