I have had i 6 inch trout cichlid for about 3 months now. I just noticed he had bite marks on his head. In my tank i have a 10 inch orbate bichir, 2 6 inch senegal bichir, 10 inch koi, 8 inch lima shovelnose catfish, 10 inch ghost knife and a trio if little catfish. Can anyone help
Well I hate to brake it to you, he's not as docile as you think he is.
Of all the upper jaw species of bichirs, Ornates have the highest tendency to eat tankmates, in my experience.
When you turn of the lights they switch to hunting mode.
Oh i know the aggresion of ornate bichirs its just i have watch all through out the night with the blue light on and he has never even tried, and yet i have 3.5 inch catfish but he doesnt get eaten