The tank is 150 gallon. I have a school of sword tails and many babies and the Ghost leaves them all alone. Originally they were supposed to be feeders haha. I think she loves earthworms so much its all she wants to eat at this time. the tail is getting longer and longer i am getting ready to do a measure to confirm exactly how big. I feel confident shes at 15"+ and with tail getting longer and longer she could end up being 16".nice bgk! what other fish is she kept with? how big is the tank? hope the tail grows back nice and full!