Hi, I have become an accidental breeder of Angels. I had a make and female pair up in a community tank and then terrorise all the other fish. After they lay eggs twice and injured some other fish, I moved them into their own tank. They lay again immediately and turned out to be amazing parents. However, the babies are now 3-4 weeks old (and we had to separate them from the parents after the parents laid eggs again and killed around 20 of their babies), and some of them are translucent (can see all of their innards) and the others seem quite pale on colour. Is this normal? Mum is a koi and dad is a pearl.