I had one that lived in strait freshwater for well over a year, I would say they are not super sensative. They just need live food, mine loved guppies, so I had some that were breeding for me and them I had lots of food for him. I finally sold him as I was tired of dealing with the live food for him all the time, he mostly just stayed in a cave till night time then got.super active, so not a fish you get to enjoy allot.
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