98-99 out of a hundred a year. At least for the ones handraised. It's 3 pairs of Tinctorious and a pair of Terribilis I work with.

Oophaga vary on the species or morph, but there is no way to have full control on the tadpoled themselves.

 

If we're talking fully developed tadpoles, then like 99.9999%. Most failures that happen, happen during egg development.

Edit: I'm excluding any communually raised tadpoles here.

 

I'd say about 98% off the top of my head -- vast majority of failures are tadpoles that simply don't morph. They live out their lives in the water, the longest for just under a year maybe? The odd froglet may morph with some kind of developmental abnormality -- you generally know right away and they don't last very long.

It's a statistical thing since you seem to see a little more of everything the higher the breeding volume -- including interesting or good things, like unusual colours or patterns or tadpoles that mysteriously morph at ridiculously high speed and grow into healthy frogs.

Healthy parents = healthy offspring. Vitamin A supplementation for breeding adults is important.

 

vast majority of failures are tadpoles that simply don't morph. They live out their lives in the water, the longest for just under a year maybe?

Methuselah tads. I've had two that I can recall, which given how many tads I've artificially raised is statistically too high. Very strange.

 

If a person had a regular problem in their captive breeding program that they wanted to address, I would imagine that switching to a food containing a higher proportion of marine algae (e.g. Soylent Green) would be a prudent way to proceed. Dripping Lugol's into tad cups wouldn't end well.

@Stephanie Nielsen , I hope these wandering discussions are relevant enough to your questions. If not, just drop a hint.