Read a lot of books, and listen to the experts!
Niger Trigger - 6"
Snowflake Eel - 8"
 Cleaner Shrimp - 2"
Coral Banded Shrimp - 2"
Tiger-Striped Star - 6" diameter
Sand-Sifting Star - 4" diameter
Various hermits and snails - 0.75-2"
Life's an ocean, dive it.
I'm 14 years old and love the saltwater hobby! Not much of a freshwater person, but I do breed Orange Sunshine Guppies.
The plecostomus is one of the most popular species of algae eater for the freshwater tank.
Nothing makes an aquarium stand out like a large shoal of colorful fish.
Also known as the mystery snail, apple snails are a popular addition to the freshwater tank.