I didnt know you were referring to one of the roaches in the pictures I posted. Hence you can understand my surprise when you stated the green banana looked like a hisser. The first picture in that post was of a discoid the second picture is a death head roach, the smaller roach with it is a nymph.

green banana cockroach- Panchlora nivea: nymphs are brown and tend to stay buried. Adult males get maybe 15mm adult females maybe 24mm. They fly and climb well. They require a lot of humidity as substrate. Most of the people who buy them from us do so to start colonies for finicky chameleons and mantids such as violin mantids that like flying prey. There is another species of them also. The females of this species can get 1.25 inches and 2-3 times the mass of panchlora nivea females. Males of both species are the same size