Excuse me??? You asked for help. The Qs you are asking are all answered in there. That article has also been published in FAMA. It might do you & your fish well, to listen to some of the folks who know what they're talking about. But again--they're your fish... do what you wish but don't come here for help then.
To simply answer your question, yes you can have 2 in a 20 gallon, you need 10 gallons each per fishy and additional gallons if you add any other fish (which I wouldn't recommend!).. I would personally only have one just because it means more room for him/her!
To simply answer your question, yes you can have 2 in a 20 gallon, you need 10 gallons each per fishy and additional gallons if you add any other fish (which I wouldn't recommend!).. I would personally only have one just because it means more room for him/her!