wifes poor setup lol

So i let my wife do what she wants lol but about 7 or 8 months ago her mom had little time to get ride of all her fish and my wife took some...She has platys and mollies with a RED TAIL SHARK in a 5 gallon tank!!!I told her this would NOT work but she did it anyways lol. Yea the shark is the boss and chases the fish but atfter all these months the shark doesnt bother them nearly as much as he use to and even though a few of the fish died they also had some babies. ............

So her set-up seems to be a go after 7months Congrats to her. Fish die sometimes. So it seems she is making it work. Tell her to spank that red tail LOL j/k