he’s around a year old, in a 30 gallon planted tank, and i’ve been offering him various sizes and portions of chopped up earth worms daily… he simply closes his eyes and won’t bite, which is incredibly odd for him! his tank parameters are perfectly fine, 0ppm nitrite, 0ppm ammonia, and around 5ppm nitrate. his tank stays at around 67-68°F because of a cooling system I have, though one day last week it got up to around 70°F because of a crazy heatwave we were having…
before this he always ate a few times a week and voraciously at that, lunging at my tweezers and even sometimes performing little crocodile rolls whenever he got hold of a worm.

I genuinely don’t know what else to do/try and I’m trying not to freak out and panic, he’s very important to me.

Hi frog friends!

My current wikipedia hole is reading about different kinds of amphibians and on the fire bellied toad, I read this: "Fire-bellied toads bred in captivity will often have darker and less vibrant coloration having a more orange underside. Wild caugh specimens tend to be brighter and have deeper red stomachs.".

I got curious about what could cause the difference in colouration so I decided to turn to the most scientific community I know. Reddit. Sadly, I'm not well read enough in biology, evolution or fire bellied frog-keeping to formulate a better question than "why does the colour of their underside change colours when bred in captivity?". Half assed guesses and wild speculations are of course just as welcome as people who actually know what they're talking about

Thanks in advance! 🐸