Serious Question. I think my fish is immortal?

Don't hate

New member
Ok, so I've had this fish named Poptart for about 4 years, and I caught him from Lake Okeechobee (he's a mino) along with 9 other minos and he's the only survivor. I have him in my fish tank with a few gold fish and a filter feeder. It doesn't look like he's gotten any bigger and he just sorta swims there. Every fish that started in that tank with him he's seen die, but he still perfectly healthy. It's pretty creepy. What do you think?
 
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