afiran cichlid

I ended up buying my first tank-mate today ? He is an "Assorted African Cichlid" -- which to be honest, I hate that certain stores cannot give you more information on the "type" than that... I have decided to name him Sunny D and he is currently acclimating through a cool little gadget I found...

African cichlids tank Tank size: 120g water parameters: ammonia 0ppm nitrite 0ppm nitrate 20ppm PH 7.8 test kit: API freshwater master the system is been up for 6 months now the tank currently has: RedFin Kandango x2 (1 male 1 female) 4'' Red Empress x2 male 5'' Venustus Cichlid x3 (1 male...

I am looking to get a dragon goby for a 40 gallon tank. The tank already contains two peacocks and 2 mbunas a blood parrot and a callychthys cat. I also have a Senegal bichir, about 6 inches in a 20 gallon. Which would it be better with?

So, have a full size dominant dragon blood peacock, 4 still growing blue dolphins, 4 yellow labs with 1 still growing, a little red empress male still growing, a red top zebra that is still growing, a bristlenose pleco still growing, and a Raphael cat still growing. 110 gallon tank. Lots of...