nuptial pads, prsent on male frogs only?

[MalcolmX]

southern bell frogs; do only males have fat thumbs, or do do males just have black fat thumbs?

also do the females have blue thighs?

[Varanophile]

the nuptial pad is the black pad on the back of the thumb that colours up when the male is ready to mate. usually only visible for a couple of months per year. females can have same colouring on legs so nuptial pad is best way to sex them. males also have more of a prominent 'adams apple' lump on throat as they have a larger voice box for croaking. this applies to golden bell and green frogs ( litoria aurea and litoria raniformis and prob litoria ewingii too)

[MalcolmX]

thanx varanophile.

all my southern bells seem to have fat thumbs but only some have black thumbs, is it impossible for females to have fat thumbs.

i am talking about 9 frogs in one tank, some of which are defenitely male (they can croak properly), i want to induce breeding but obviously need females in the mix.