Happens all the time man, fish stores get sent mass boxes of fish then put them in tanks and forget what's what. Or a mislabelled shipment. Very common occurrence.
However, RTM's are awesome fish. Very beautiful when they mature. Although highly agrressive. From my experience they are the most agrressive Parachromis at a young age. Obviously Dovii is gonna take that tittle when they put on size. But when little, these guys can be little demons. So be prepared for this.
If your not, then just return the fish. The guy should take it back no problem. Explain the mix-up and get your money back or store credit. Whichever makes you guys agree to terms.
Up to you really. Either way, good luck.
