Funny you'd mention that, Sergio. My Yasuhikotakia modesta challenged two others on a duel and he winded up with several scratches and a deep graze mark on the caudal peduncle. So much for a duel. He never gave up at all and after an hour, I went back and he's still clashing despite his graze marks. The others gave up in the end with very little damage compared to him.
