I've never had that happen. I'd say it is not true. I've had numerous large royals together, and never have had a slower growth rate on the smaller royal. I could see this being true however in a cramped condition with only one place to hide for both royals.gollum;675235;675235 said:its true I'm told if there are two royals in the same tank that the larger one will secrete pheremones to inhibit growth of other competitors...
wyldfya will know![]()