There's no such thing as a stupid question unless it remains unasked. You're smart to do your research BEFORE you go out and plunk down your cash for fish that you end up regretting.
The Blue Peacock, Aulonocara nyassae
, and the Electric Yellow Lab, Labidochromis caeruleus
, are both African Rift Valley cichlids. Both come from Lake Malawi and require very hard, alkaline water. A. nyassae
gets to about 6 inches and L. caeruleus
to about 4 inches. African Rift Valley cichlids are very aggressive and territorial and could not be safely kept in a 20gal aquarium.
One of the best places for information about cichlids is the American Cichlid Association. Their web page is at http://www.cichlid.org/
. You can also try a google search and type in cichlid
as your search topic. You'll be overwhelmed at the number of web pages and the variety of information that is available to you.