Hi,
I've just taken on 4 adult Fire bellied toads. I've noticed that since I have put them in a different viv the dorsal colour has got quite a lot darker. I realise that many amphibians can alter their colour slightly depending on their surroundings (and the new viv has fairly a dark substrate and background) - but just wanted to check that it's not a dietry problem. I have a ZooMed Iguana light in the viv.

Thanks,

Barry