170 gallon.... 7 rbp at 4in., approximately 15 crayfish, 2 res turtles, green sunfish, and rock bass. All have been cohabing for over a week. The turtles and piranhas have no interest in one another but do ten to steal food from one another. The rock bass and sunfish are constantly hiding so have yet to be eaten although their fins are a little tore up. No big deal I lose them b they are easily caught right beside my house. The turtles typically stay up top or bask while the Ps are always at the bottom. And as for the crayfish they are an occasional snack for everyone. I know the setup sounds crazy bc of the turtles but the same turtles once lived with a jack demsey red terror 2 parrots and other various fish for over a year so I'm goin to gie it a shot again. I'm open to all opinions, advice, and experience, even criticism lol.