I want to buy either a delhenzi or endli bichir to start growing out for my soon to have monster tank. The only problem is right now I have a senagal and an ornate in a 150 together and the ornate hides in a decoration until its time to eat. A week or two ago I saw why he's always hiding. The senagal bites him as soon as he see's him come out of his decor. I have noticed the royal pleco in there beats on him as well... They are both around 7 inches right now.. the bichirs that is.. Is agression normal amonst this family. I will move the senegal if I have to.