Well technically they were possibly born in 2 different batches. It was just that 1 was born the night before the other or so it seemed. Granted in a heavily planted/decorated community tank, it's anybody's guess on whether they are from the same batch or not. Either way tho I'm still curious to see how they'll turn out once fully grown. And who knows maybe I just stumbled into the next new thing that everybody wants lol.
Mutations aren't always locked to a single member of a batch of offspring. Mutations can show up in offspring when both parents happen to be carrying a randomly occurring recessive mutation, causing said mutation to show up visually in the offspring. Perhaps they both happened to be carrying the melanistic gene. For example, my platinum convict, Nick, had a twin. I was trying to get baby pictures of him, and was watching an old video of him at like a month old, saw him in the frame, and then a second one with the same nicked dorsal fin came into the frame. Had a wtf moment there. He currently has a grandkid with the same mutation as well. Both his parents had normal dorsal fins, as well as all of his direct offspring. The fact that his grandkid has it proves that it is genetic, and a recessive gene.
