I picked this guy up from SNOOKN awhile ago and I absolutely love this guy. He is a little stubborn when it comes to eating but he makes it worth it. By stubborn I mean, the shrimp has to land within three inches of his face for him to eat it haha.
Ive been reading that they get into the 30 inch range on average. From what I have noticed, they are pretty slow growing due to their picky eating. I have had this guy since John's list first came out with them on it.
For awhile I gave him a dozen feeder danios a night. I feed him shrimp and worms every night now. I would feed feeders but I have too many fish in my tank that were a pain to get off feeders and I dont want that again. He still gets just as fat with the shrimp as he did with the feeders. He did not chase after them very often.