Read, read, then read some more
Don't know the scientific names...but common names are: Gold Cobra Guppies, Red Wag Platies, Blood Red Wag Swordtail.
I'm just getting into the hobby. I sometimes get lost just watching the fish swim around. This is my first tank EVER so I know I'm gonna go through more.
The pet trade gets a bad rap for exploiting wild animals but sometimes the opposite is true.
Modern advances in technology affect every industry - even the aquarium hobby.
If you are looking for a unique invertebrate to add to your saltwater tank, consider the sea urchin.