Pleco

My gorgeous goldeneye cichlid (nannacara anomala) pictured below was added to my 55g community tank after being rescued from the depths of my neglected quarantine tank. I had long assumed all of the fish within had died, which is why I waited months until I decided to tear it down. Lo and behold, as I was scooping dead plant gunk from the 2 inch tall, mulm infested water, my cichlid comes flopping out with it. I felt awful for my poor guy and also felt grateful now that | could give him the life he deserved: a large, planted, community paradise. I fell in love with his gorgeous color, confidence, and his ability to bounce back after months of awful conditions. When I had bought him I read through the seriously fish article about them thoroughly, and thought I was introducing a peaceful, hardy, colorful community fish to my tank. I've always seen Seriously Fish as the best, most informational and objective source in terms of fish research, and it's never led me wrong. Since l've added him, he has killed a group of 12 albino glowlight tetras I tried to add, ripped and nipped at the fins of all of my fish, chases and bullies every fish in the tank, hogs and steals food by chasing other fish away, and has become increasingly territorial over the entirety of the 4 ft tank. I was so grateful he survived the suffering I unintentionally put him through and felt I would redeem myself by finally giving him the life he deserved, but I feel incredibly guilty about the fact that rehoming is most likely the best option. None of my other fish will be able to thrive being bullied and harassed constantly, and adding more dither fish seems to increase aggression instead of disperse it. I am beyond disappointed in myself for not checking other sources but shocked at seriously fish for saying the opposite of what this fish is like. I understand each fish are individuals, but several other sources l've seen since then have mentioned them being aggressive menaces. I feel so guilty, I love him and he deserves better and so do my other fish, but part of me doesn't want to say goodbye to him. I know it's easy to say "it's just a fish" but it feels like l've failed him and it'll be so hard to give him up. This is your friendly reminder to please always check other sources when researching new fish species, even if it's from one you trust completely. TL;DR Please always check multiple different sources when doing fish research, even when it's a website you trust/ is usually reliable like seriously fish. I now feel very guilty about having to rehome my boy that has been through so much. this is a copy of my Reddit post, their community is not as understanding and compassionate as I know you all are. Just looking for comfort and advice from people who have actually kept this fish, I’m now seeing so much conflicting information and want to know if they are naturally aggressive or not, and if this could be a result of trauma from the conditions he survived in previously.