What size tank is he/she in? Males get about 3" in length, not including legs, and females can exceed 5"- go on YouTube, there are some crazy huge females out there!!! I've heard of adult frogs eating 5"+ ghost knife fish. Don't underestimate them!! But if you have the room to give it a 20+ gallon tank with no fish, they are very rewarding pets, and often enjoy hand-feeding!