An eel with a small mouth. My first eel was a half banded spiny eel (ich also got him. That's why I have a peacock). Loved him to death. That little guy was only four inches, but he was always roaming the tank. I was surprised to see him doing this after the bp and featherfin were both 5", and the pleco at 6". Spiny eels only get 8", so they can't eat other fish. I also like my featherfin. It may not come out often, but it is fun to watch when it does. The fish may not be colorful, but I love the size of it's fins. My featherfin is 5" (as stated above) and it's dorsal fin is about in inch tall, along with it's tail fin.