
Welcome to Fish Lore
Glad you've found the forum helpful. Congrats on cycling fish less!
I'm really happy to hear you've rescued these fish from being flushed.
Unfortunately, the
CAE takes you over the top as far as being over stocked. I also read about them sucking slim coat, but it's more apt to happen to flat sided larger fish such as angels or
goldfish.
The black neons and neon tetra could hang together. Same with the serpea and black skirts. Fish that are the same size and shape have been known to school together.
Keep in mind that all the fish (except the cae) are schooling fish as John pointed out and may do better with fish of their own kind.
I wouldn't add any more and see about re-homing the cae or you can always get another tank.
Good luck with your tank.
