Hello Alisa!
I'm glad your interested in becoming part of the Merfolk family!
Some great tails to buy are listed below along with link and price!
"MC Moonlit Sea Tail Fatpack FEMALE" 500L$
Easily change tail colors with an all new original Mer-chandise Cove HUD!
Available in all 5 standard clothing sizes!
Not only does this tail combine the realistic beauty of rigged mesh with the flow of a flexi fin, but it is complete with normal and specular mapping to give an iridescent shine to each of your lovely scales for an unparalleled 3D appearance! This is simply a must have for anyone seeking a realistic mer look in SL! Try the demo to see for yourself!
Keep in mind that the tail itself is MOD/COPY so if you don't see the exact color you want in the HUD, you can always tint it to the exact color of your choosing
*MAKE SURE you have the newest version of SL or Firestorm viewer and Advanced Light Modeling on to be able to see this effect*
To Enable settings:
Preferences>Graphics> Check the Advanced Light Modeling box.
This tail is a perfect item, I have bought it for my female and male avatar and its beautiful!
Now for AO's you can simply type in "Mermaid AO" and it will appear up for about 200L$ or even free depending on the quality you seek!
Have a lovely day! ♥