I am getting two of these guys in the mail today, they are said to be 4". I have a 20 gallon quarantine tank that they will be going into for a couple weeks to make sure all is well with them. My plans are to sell one and keep one in my 1100 gallon pond. I got them for 46 bucks including shipping, good price? Is there anything special I should know about the care of these guys?
The pics arent mine they are from the seller.


The pics arent mine they are from the seller.

