are they in the same tank with the sewellias? These are really nice too. I especially like the G. ctenocephalus . I wish i could keep these species, the house just gets too warm for them.
Clowns-6 is a group and more is never too many, providing the aquarium is large enough.
Yes same tank as Sewellia's, this tank if left will climb to and above 80' but I have a fan positioned at the top of the tank at one end which is controlled by a timer and comes on for an hour 3 times a day and this keeps the temperature down to around 75' to 76'.