Hi!
I have zebra knife too! And i love it. He is always hiding somewhere but when its lunch time he gets crazy.
He loves bloodworms. My knife is Gymnotus Coatesi. He is only 10 cm long it will grow to 30 cm.
He lives now in a 50 gallon tank with 2 armoured catfishes, angelfish, 2 kingtiger plecos and 3 Siamese Algae Eater. I am going to buy a 150 gallon tank. I am sorry of my bad english. I am from Finland...
I have zebra knife too! And i love it. He is always hiding somewhere but when its lunch time he gets crazy.

