Do you think other cyprinids would kill koi and goldfish?

[sostoudt]

do you think larger cyprinids (carp, mahseers ,black labeo etc)?

heating isnt a problem. i guess it varies by species, so whats your opinion of the ones listed.

 

[Noto]

Common carp (including leather and mirror carp), grass carp, black carp, silver carp, bighead carp, etc. are all pretty peaceful and hardy. Some of them are illegal in some states, so check with fish and game first. Common carp are the same species as koi and will interbreed with them. I don't know about the mahseers or labeos.

 

[sostoudt]

thanks for the info.