I have a 125 with 5 different species of water turtle, a school of tiger barbs, a long ear sunfish, and a few others and they have lived together since the turtles were an inch long with no issues.
-Red Ear Slider
-Painted
-Softshell
-Musk
-common snapper
They are all about 4 inches now and will soon move to their new 220
-Red Ear Slider
-Painted
-Softshell
-Musk
-common snapper
They are all about 4 inches now and will soon move to their new 220