Don't some Rivulus marmoratus do this also, at least for extended periods?
> I'm actually heading down to Belize in a few weeks to co-instruct a field
> course. I know the distribution of Phraetobius doesn't extend that far
> north, but now I'm tempted to dig around in the leaf litter along some of
> the streams I visit.
You might see some Rivulus then!
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