Tell me about very deep freshwater ecosystems.
There are rivers and lakes which are hundreds or even thousands meters deep, surely some interesting stuff happens there?
>>2020843
>mfw we'll never get some good footage of the amazonian deeps because of the murky water
Sounds interesting. I don't think the hot seeps and vents of the abyssal ocean occur often enough in fresh water for there to be life in the freshwater depths that doesn't depend on raining detritus.
But I don't know anything.
>>2020850
>the site they mention goes 404
http://www.nytimes.com/1997/02/18/science/amazon-s-depths-yield-strange-new-world-of-unknown-fish.html?pagewanted=all
Perhaps you would find fish like picrel, Orthosternarchus tamandua. This one lives usually 6-10 m below the surface, but due to murkiness it's so dark in here that the environment is basically the same one as in the deep water.
>>2020887
Lake Baikal has volcanic activity.
But mostly the ecosystems are based on detritus, and there are numerous sponges that live in deep, cold freshwater.
Life is gonna be rarer without all those sea-minerals that make up seawater. There's probably bacterial mats and stuff.
>>2020850
>mfw we'll never get some good footage of the depths of the Congo because of the murky water
>>2020986
>mfw a Goliath tiger fish would just eat the camera anyway
watch this series, https://www.youtube.com/watch?v=GNj75_4jLaY
it shows underwater footage of pike cichlids, plecos, and knifefish underwater
