Comunity tank, With cichlids, tetra's, angels, loaches, plants and a teacup ray, etc. I have a Cascade 1500 Power Filter with an Aquaclear 150 and a Penguin Biowheel.
Start with a minimum of a 30gal tank.
Stingray, Cichlids, Most comunity tank fish.
To much to name.
You can never run out of things to buy.
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.