Great fish, he is old and completely not aggressive, i have read some reports stating that they may 'latch' onto other fish. Ive not had any damage to other fish or seen him do anything like that (he is usually the one getting bullied by a Red tailed black shark which i took back to shop) although i thought i had lost him the other day, he got his head stuck in the small hole of a plant pot i used for decoration, he could not move and was struggling, smashed it with a hammer and he is free he has lost scales behind the head but is swimming and eating fine
