Appearance
Males of "H. rosenbergi" measure on average 83 mm in snout–vent length and females 86 mm. It has partly webbed fingers and entirely webbed toes, and large disks in both fingers and toes. Its skin is granulated with small warts, and yellowish, greyish, or reddish in colour, with brown or blackish marbling or spots.
Naming
Its name is a testimony to Mr. W. F. H. Rosenberg who collected the type series. The name "Gladiator Frog" is due to the aggressiveness of males of the species.
Status
"H. rosenbergi" inhabits primary and secondary forest, as well as in heavily altered areas such as small strips of trees in pastureland. It is considered an adaptable species that is not facing any significant threats.
Habitat
"H. rosenbergi" inhabits primary and secondary forest, as well as in heavily altered areas such as small strips of trees in pastureland. It is considered an adaptable species that is not facing any significant threats.Reproduction
Gladiator frogs are so named because of the aggressive nature of males. Female gladiator frogs only mate with males that provide a nest. Males can acquire a nest either by building one, using a suitable water-filled depression, or conquering another male's nest; the aggressive behaviour of males relates to the third strategy. The way of acquiring a nest depends on local conditions and may differ between populations. Thus, in some populations, males do not fight, possibly reflecting high abundance of suitable nests, and reduced risk of hostile take-overs.References:
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