Charco Azul pupfish (Cyprinodon inmemoriam), first described by Balderas, 1993 is a small fish in the family Cyprinodontidae (order Cyprinodontiformes). Adults typically reach 7.50 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Tropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. On the IUCN Red List, it is classified as Extinct.The species is a species of conservation concern.
This species is distinguished from its congeners in having the following characters: 4th ceratobranchial with up to 4 teeth, at least on one side; maxilla shortest at 0.68 times in anal fin base; postdorsal-postanal length short 0.8 times in caudal peduncle length; head and body greyish blue, bars obsolete; eye 1.2 times in anal fin base; head 3.0 times in SL; anal fin base short 3.3 times in head length; dorsal fin short, reaching anterior third of caudal peduncle .
Behavioural data for Charco Azul pupfish is currently being reviewed.
Freshwater; benthopelagic; non-migratory . Tropical Central America: Extinct; formerly from Río San Juan system, Mexico.
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .
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