Most specimens collected from the wild in 2011 had purple pigmentation on the columella indentation, but juveniles propagated in captivity did not have this feature. The external tissue pigmentation of "Leptoxis compacta" is yellow, mottled with black and includes prominent black bands in the middle of the proboscis and on both eyes. This pigmentation banding pattern is identical to sympatric "Leptoxis ampla". Pigmentation patterns and the presence of an ocular peduncle are features that distinguish "Leptoxis compacta" from sympatric "Elimia" spp. including "Elimia clara", which is conchologically most similar to "Leptoxis compacta".