Found a larvae in my firebelly tank

[lordcycle]

I've had about 6 Firebelly newts for 3 years and today i was suprised when i saw a little larvae swiming around the tank. then i looked at my java moss and i found eggs in it. my question is do the eggs all hatch at once or diffrent times? i've only seen the one larvae and it has both front and back limbs meaning it must be kind of old right? i hope there's more in there but i can't find any? should i remove him from the tank? the adults seem to ignore him or is it that they've already eaten his brothers?

 

[Joost]

I should put them in another tank (also the eggs), just to make sure the'll not be eaten. Some leave the eggs and larvae, but some are also notourious egg eaters.