If anyone is afraid to be wrong, it's not le patron. First off, for that to work, he'd have to be wrong in the first place. Saying that this juvenile bluegill, Lepomis macrochirus, is not a bluegill because it does not look like a large adult bluegill is ridiculous. Many fish grow up to look quite different that when they were young. You have to look at the details of its anatomy to correctly identify it.
Why is it NOT a crappie? Look at the mouth. Much too small for a crappie. Even at a young age, they have a much larger mouth relative to their body size. Also, where is the normal speckled pattern of the crappie?
Why is it not a tilapia? Well, besides some of the same reasons, like the mouth for the crappie, look at the dorsal spines. The bluegill appears to have 8 spines in the spinous dorsal. The tilapia has upwards of a dozen. Also, if this fish is an African cichlid species? Why does it have the "ear flap" which only exists among NA centrarchids?
I'm not trying to attack you guys, or your IDs, or try to make myself look good. I'm trying to help people out here by explain CORRECT identifications. It gets more annoying by the day seeing people throw out ridiculous incorrect IDs (especially when they shoot down the correct ID in the process). Look at the details, think about the ID, then maybe consider posting an ID if you have some good reasons that you think the ID is correct.
I'll gladly see why you believe your IDs are correct if you have some solid reasoning. Don't just tell me I'm wrong because you kind of think so.