I know that black belts are ferocious plant eaters yet my old one (F1 female) did chew on the swords in the tank from time to time but never really destroyed them. But my F0 male is crazy, he destroyed about $70 worth of large anubias barteri and he doesn't even eat them! He just enjoys to "fight" them and shred them to pieces! I clean my eheim and my rena and I always found anubias shreds in the filter. I removed all my plants and moved them to my 30 gallon planted. Hell, even my turtles don't beat up anubias this bad. Anybody know why?