You just have to understand that many aren't gonna believe you because Aro's don't breed in 420's. Believe it or not to some of the members here 420 gallons is nothing and they've been unable to get them to breed. I think it's been said that so far no one has bred them in anything less than a pond. So that means your uncle would've made a break through twice in Aro. breeding at the same time created the very first hybrid and without the help of a lab which would almost undoubtedly be necessary as it is with RTC/Shovelnose hybrids and done it in the smallest body of water ever by anyone in the hobby. Plus he would be making a ridiculous amount of money since I guarantee everyone on here would love to have the first Aro. hybrid ever and would probably push the price upto Platinum Aro. status perhaps beyond. Seeing as I haven't seen them ever listed by anyone ever, where is he listing them? What's his asking price? Can we see the 2 Aro's that are parenting young? And can we see pics of the mouth full of eggs and fry? As well as the stripping process? It should be easy for you to produce as your family, and he even gave you one for free, so I imagine you'd have access to his tank and you obviously know how to post pics here so providing proof should be easy.