Interesting, in the US there are several facilities that use Bluegills to detect...

		itronitron on Dec 31, 2020 \| parent \| context \| favorite \| on: Clams filter the water and check whether the water... Interesting, in the US there are several facilities that use Bluegills to detect water quality problems. https://www.army.mil/article/50369/bluegills_monitor_treated... https://www.sfgate.com/news/article/Anti-terror-fish-guard-S...