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Over 80% of Tuna died since December in a major Tokyo aquarium
81% of Tuna have died in an aquarium of eastern part of Tokyo since the beginning of December.
It’s “Tokyo Sea Life Park” run by Tokyo Metropolis, which is the most popular aquarium in eastern Japan since opened in 1989. There were 69 Bluefin tuna, 52 Kawakawa and 38 Striped bonito by 11/1/2014, however they decreased to only 17, 4 and 9 in this order by 1/14/2015. In total, 129 of 159 tuna died since December.
The aquarium states it can happen that some of the fish die just after transferred to a glass tank, but they haven’t experienced such great scale of death to happen rapidly.
They administered medicine, eliminated what can potentially cause stress such as change of light, noise and vibration on advice of experts, however because they couldn’t stop the death increasing, they announced this in public before pathological diagnosis.
The glass tank has 7 m depth, 30 m diameter and 2,200 t of water.
The cause hasn’t been identified yet.
http://www.tokyo-zoo.net/topic/topics_detail?kind=news&inst=kasai&link_num=22697
Iori MochizukiThe post Over 80% of Tuna died since December in a major Tokyo aquarium appeared first on Fukushima Diary.
Source: http://fukushima-diary.com/2015/01/80-tuna-died-2-months-aquarium-tokyo/
