There really is no absolute. I just recently sold off two of my three female green sips, but until that point they had lived together peacefully for over a year. Some people will say such a thing is impossible, while some of the veteran froggers will point out how keeping tincs in groups used to be the norm. Just keep an eye on them and either adjust their tank setup to provide more visual barriers and other territorial divisions or split them up.Roughly? Starting around 4-6 months, 6-8 months? At what point do they begin to get aggressive toward each other or start to make their territorial claims? Just in general.
It really is difficult to say as there is no concrete age where they all suddenly become territorial. For example, I've had tinc froglets "gang up" on a smaller frog through food competition, causing one to be small and much thinner and less active, as early as a few weeks out of the water. On the other hand, I also raised two female azureus up together from tadpoles and they were fine with no aggression until at 2.5 years old, I added males and they started breeding. So, keeping in mind that this is not set in stone and the most important thing is to carefully observe them and watch for one becoming weaker than the other, I have found that the majority of the time tincs start to become territorially aggressive around 5-6 months old, depending on the enclosure, and competitive over breeding as they mature, which can be as early as around 7-10 months.Roughly? Starting around 4-6 months, 6-8 months? At what point do they begin to get aggressive toward each other or start to make their territorial claims? Just in general.