Description

Dorsal soft rays (total): 16 - 26; Anal soft rays: 17 - 25; Vertebrae: 27 - 29. Can be diagnosed from other species of the Austrolebias alexandri group by the following combination of characters: posterior margin of each pectoral fin in male reaching a vertical between base of second and fifth anal-fin rays (vs. between urogenital papilla and base of second anal-fin ray); origin of dorsal fin either on vertical through anal-fin origin or posterior to it (vs. anterior); and presence of vertical rows of light blue dots on entire flank in larger males (vs. light blue bars) (Ref. 57613).

Common Names

Taxonomic Hierarchy

Kingdom: Animalia

Phylum: Chordata

Class: Teleostei

Order: Cyprinodontiformes

Family: Rivulidae

Genus: Austrolebias

Species: Austrolebias periodicus (Costa, 1999)

Climate Zone

Location

Biology

Life cycle and mating behavior

Habitat

benthopelagic