Yes, I do have to concur this is a goos chance of being a goodied, ameca splenden, possibly a butterfly splitpin.
But I am certainly no expert at this so this would have to be checked by a knowledeable member who can possibly identify and give some information about this particular specie.
This link I am giving here can be a bit hit or miss when comes to fish information but I do not know of any other reputible sites for this particular genus of fish to be honest, so this is best I can give at this moment in time.
It's a Goodeid
I don't think they are ameca splendens tho mine don't really look like this..
I have a large sized colony in a species only tank and they are amazing and fun to watch. Probably my favorite tank.
Not your average fish tho as they barely have any colors. They do have a very nice shine tho.
They live in groups and will establish a pecking order, so.. They are very nippy. They killed a couple of corydoras I had while they were in a holding tank