Can you keep multiple L3 larvae of different species in a tank?

Hi, I have a megasoma elephas elephas L3 larvae currently in a tank. I am currently keeping beetles in my boarding school without many people knowing and I don't have much more space. However, in the past few days I have managed to track down 2 rare beetles, they are both kabuto mushi except one has white eyes and the other has pink. I badly want these and I was wondering if I could keep 2 kabuto mushi L3 larvae and a megasoma elephas elephas L3 larvae in the same tank? I heard that some species of rhinoceros beetle can be very aggressive to each other in the L3 stage and I even had to seperate my dynastes hercules hercules beetles. For any of you that has experience with these species of beetles could you let me know if it would be okay?

Also if keeping all 3 in the same tank isn't a good idea, could I keep 2 tanks one with only the megasoma elephas elephas larvae and the other with both of the kabuto mushi larvae? The second tank would also be the same size as listed below.

My tank's size: 300 X 195 X 205 mm (12” X 7 1/2” X 8”)  for reference

Thanks for your time!

 
Thanks for the first reply in a very long time :)  Sadly I already know that some species are carnivorous, I was just wondering if a Kabuto mushi and megasoma elephas elephas could be kept together. Though thank you for a reply, much appreciated :)  

 
@uuernestuu there is a Facebook group called Beetles Farm-PP that is pretty active and you may have more luck since no one seems to know on here right now. I like checking here and there each day as there isn’t enough from either one daily for me haha (even though im mostly a lurker in general) 

 
Rearing space is always an issue, with anything. It's going to be better to keep population density down. Most of my experience rearing

insects is with Saturniidae, and I try to keep even larva of the same species in different sleeves in case of disease.

From what I've read, some beetle grubs are cannibalistic and can't be kept together at all, other issues could be a grub disturbing

another during a molt, or making a pupal chamber. You can't do everything at once, and there's time for everything...usually.

 
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