How many D. Ventrimaculatus in a 40 gallon vivarium (well planted)

[LauraCox]

I did a search for this topic first but the answers seem to be all over the place. I have read some people saying up to 6 and some saying no more than one. Josh's Frogs says you typically want 5 gallons per frog but that seems like too many and I certainly don't want to stress the little buggers out. The tank is oriented vertically and is very well planted. These would be my first thumbnails so i'm excited.

[wesleybrouwer]

I believe it's somewhere around 45x45x90cm? (LxDxH)
In this size of tank you may keep 6-7 Ranitomeya ventrimaculatus without problems.
Just provide them with some good hiding spots and always keep an eye out on the individuals when you keep frogs in a group,
i suspect no problems, but it's always a good idea to see no frog is getting suppressed.