Can I add a box longhorn cow?

I was wondering everyone's opinion on longhorn cow fish I recently talked to someone that had no problems. I know every fish has its own personality but wanted some other people experience with them.
I have a fully stocked 150gl mixed reef crabs,shrimp, starfish and the fish are a blue hippo 2 black and white clowns a orange a firefish goby, lawnmower blenny, yellow tang, flame angel, yellow watchman goby 2, green chromisis, think that's it thanks for your input.

 

i would say it is iffy in r/t eating the crabs, shrimp and starfish. Mine was pretty good at knocking the crabs over and eating them. Other than that i dont see an issue

 

They are a very poor choice IMO.Similar to other boxfish, the Cowfish Longhorn's skin is poisonous and, when threatened, it will release a toxin lethal to other tank members, including other Longhorns.

 

That's kinda what I thought it's not worth it everything's happy so I guess I'll ju it's not worth it everything's happy so I guess I'll just have to wait maybe 1 day my work wife will get let me get a fish only tank. I thought I if got him small enough I could teach him to eat what I feed it not what in the tank

 

Can't these fish get up to 2 feet long?

 

Yes they get very large all though for one to reach that Length in captivity is uncommon