www.zierfischzucht-mack.de    a genius breeder (in german)

www.corydorasforum.de    Info exchange of keepers and breeders (in german)

www.ig-bssw.org    interesting breeding reports (in german)

www.l-welse.com   database about C- und CW-Numbers

www.planetcatfish.com   many informations and breeding reports