It’s called a Black Moor. I’m a little confused by your phrasing: are you looking for information on breeding goldfish or for information on goldfish husbandry? http://www.firsttankguide.net/goldfish.phphttp://www.ratemyfishtank.com/articles/55 Goldfish are one of the easiest fish to keep (except perhaps for bettas), although they are know for being quite dirty. I’ve never researched it, but I was under the impression that ponds/larger tanks are required for breeding. What exactly happened with the bettas?