why not fresh water fish?

[Chipdog]

I have read in a few places that you shouldn't feed your octo freshwater fish. I was wondering why that was. The only thing I could come up with was the possibility of them being raised in Copper treated water.
Is the rule the same for ghost shrimp as well?

 

[octopus_octo]

YES!!!!

YES!!!! the same thing goes for copper fish also ANYTHING freshwater has to much fat and no nutrients!!!freshwater is a no no

 

[chrono_war01]

well, that's a shame since freshwater animals tend to be cheaper

 

[Chipdog]

with no nutrients its a wonder how everything that eats freshwater fish as their only diet lives at all.

 

[joel_ang]

Its not because the fish have no nutrients in them, but rather, the nutrients in them are inadequete for cephs.Copper treated water is also one of the reasons.

 

[Thales]

I cant find it in a search, but does anyone have any data on FW animals not having the right balance of whatever for SW animals to eat?