Don't have Dorados, won't get any, and Don't have Pics :lipsseale . Good advice above, BTW. You can find plenty on the net and in books about them. You can even find the fish, but you'll do it all by yourself.
I love all kinds of fish. I'm nuts about Freshwater Stingrays. All the fish you mentioned are cool. I don't keep them because it's not worth my current jobs, my future, and a lot of money in fines that I don't have.
I'm so paranoid that I don't even have a Tilapia or juvie bass that I'd love to seine outta any creek or river around my house.
Do what you will, I'm no narc, I don't care-just keep it in yr tank or kill it and donate it to science if you decide it's too big and eats too much. I'm tired of stuff ending up in the rivers that shouldn't be there. I've seen enough to think Pacus and Hypostomas (common monster plecos that just eat and crap all day) should be restricted in Texas, and believe me I despise restrictions placed on what anyone can do, but it just seems like some people need to be babysat well into adulthood.
Sorry, I don't want to start this stuff up again.
And TONSOFOSCAR, don't take any of this personally, I don't know you from anyone else. I've just seen too many people with blatant disregard for laws that ruin it for the rest of us that just don't want any trouble.
I just wanna cry when I see states up North that have banned all Pythons...