Trimar sells them them for £4.99 at 5 inch in length. They got no picks on their site though. Oh and a friend of mine has owned a jag. With tank mates too and had no problems. He added the jag after his other fish (red dragon flower horns, convicts, and red Oscar). They were all around 4-5 inches to start (including the jag) he later got rid of them all, biggest being around 10 inch, he only re homed them due to wanting something different. If a dovii is similar to the jag then I can't see them being too bad. My friends was so nice, he used to hand feed too lol