Chocolate is the shyest fish. I have one for 6 months, still hiding most of the time and grows very slowly because he is too timid to compete for food. No one is picking on him. He is just scaring himself.
Not mine. Comes right up to glass whenever I get close to the tank. The 2 at 4"-5" will compete for food against my 6" green severum pairs and an 8" leporinus
I keep mine with more though only mildly aggressive tankmates than severum that include a bigger green terror,a Vieja melanurum, and similar sized African peacocks. Most fish ignored him and none picked on him, and he has never suffered any torn fin, but he is such a whim that as soon as any tankmates show assertiveness over him, he just runs and hides. Another factor could be I keep him single. If I keep a pair, then they may pay more attention conspecies and less nervous about other tankmates.