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WebJul 27, 2024 · 1. Lethargy. Lethargy is one of the most common betta fish behavior before death. Normally, bettas are very active fish. They love to swim around the tank and play with their toys. But, a lethargic betta seems very tired and stays at the bottom of the tank, doesn’t move, doesn’t play, and swims around. WebJul 9, 2024 · Twitter was horrified when Yataka Suzuki uploaded the video of the fish flopping around for TWO MINUTES, with the caption: ‘The vitality of the fish is amazing’. 魚の生命力が凄い pic ... WebFish will also die after cleaning a tank because of the drastic temperature change. It will put them into a state of shock which can be enough to kill them. Fish can also die after a … dwindle catalog 2023