i found the answer too #3 and you are very close but is this an avalible type of frog?
Ranitomeya amazonica Arena blanca morph
This is a relatively recently discovered morph of R. amazonica. It also occurs in the vicinity of Iquitos. For some time we suspected that these frogs may have belonged to a new species, although extensive genetic data place them nested within the amazonica clade. Many individuals bear a striking resemblance to the sympatric R. reticulata; we suspect this may represent another instance of Muellerian mimicry in poison frogs.