アハ体験 （熱帯魚編)(Aha Taiken (Nettaigyo hen), lit. Aha Experience (Tropical Fish edition)) is a screamer published on Youtube and on Nico Nico Douga(2012). It starts with a picture of 7 tropical fishes swimming accompanied with a relaxing music. At 22 seconds, the picture starts to shine and when it reaches 27 seconds, a disturbing picture of a distorted japanese woman appears along with an extremely loud scream.
The inspiration for this video was the japanese PSP game Aha! Taiken, which involves finding the difference between two very similar pictures, examine a video and find what changes it is going through. The game is called "aha experience" because it is meant to surprise players when they discover what the changes are. Upon discovering those changes, they'll say, "aha!". Changes are often not immediately perceptible, so players must pay close attention to see what's going on.
NOTE: The following video contains a screamer.
- nicovideo.jp/watch/sm17809959 — Nico Nico Douga version.