Marbled pearlfish (Leptolebias marmoratus)

Scientific name: Leptolebias marmoratus Ladiges, 1934

The Marbled pearlfish (Leptolebias marmoratus) is a freshwater fish of the family Rivulidae. Native range: South America, Atlantic coastal river basins in Brazil. Listed as Vulnerable in IUCN 2004 and listed in Appendix II of CITES.

Biology

Dorsal soft rays (total): 15-17; Anal soft rays: 18 - 21; Vertebrae: 28 - 29. Possess an asymmetrical caudal fin, with convex dorsal outline and a straight ventral outline, anteriormost ventral procurrent ray; a white stripe with narrow ventral black border on the ventral edge of the caudal fin of male. Dorsal fin of male approximately triangular, tip pointed ending in 2 short filamentous rays with the tips reaching middle of caudal fin; dorsal fin rounded to slightly pointed in female. Anal fin of male approximately rectangular, posterior tip slightly elongated; rounded in female.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Leptolebias marmoratus
Family
Rivulidae (Rivulines)
Order
Cyprinodontiformes (Live bearers, Killifishes and Rivulines)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
3.0
Environment
Freshwater; benthopelagic; non-migratory
Climate
Tropical
Distribution
South America: Atlantic coastal river basins in Brazil. Listed as Vulnerable in IUCN 2004 and listed in Appendix II of CITES.
Conservation status (IUCN)
Vulnerable (VU) (B1+2ac+3bd)
Threat to humans
Harmless
Uses
Fisheries: of no interest; aquarium: commercial
Resilience
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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