Wow very nice patterns. Out of 8 of mine 2 came out to look like that. The rest are just plain olive golden with red tail. Not sure if that's how you tell male and female. I'm also surprise that you keep them with the same exact fish as I also keep mine. Banka snakeheads and juvie chinse sailfin shark. Got mine at 1.5" and now at 6" in just less than a month. They eat fast and grow fast. If no food available they eat each other. That's why I only ended up with 3 left out of 8. I now have live worms in the tank so when they get hungry they just snack on the live worms. I also make sure that the live worms don't run out as they might turn to each other for source of protein.
