Nice catch. You can keep 4 -10 NTT's when they're young. They are the least aggresive among the datnoid family. I like them because they're stable most of the time. My 4 NTT's practically eats anything. For now, I feed them Market Prawns, Hikari Sinking Pellets and Hikari Sticks. They do love headless superworms which is for my crossback aro. They go nuts with superworms as if there's no tomorrow. They're all 2.5 inch when I got them and now gained an inch and a half in just 4 weeks. Good luck with your NTT. It's an awesome fish. Full of personality.