iridescent sharks

hello!! I have 2 iridescent sharks. I got them 3-4 years ago and need to re-home them. One of them is about 10-11 inches and the other is about 7-8 inches. I hate having to let them go, but I cannot care for them or provide them with the space they need. I did not do my research when I got them...

Sorry about the title but lol, couldn't help it So, as I've visited lfs or even regular supermarkets that sell fish in a small section of the store, I've noticed that Iridescent sharks, aka Columbian sharks, are being sold as fish that only get to 11", and can be housed in 10 gallon tanks...