| Cyprinodontidae (Pupfishes), subfamily: Cyprinodontinae |
| 7.5 cm TL (male/unsexed) |
|
benthopelagic; freshwater, non-migratory |
| Central America: Extinct; formerly from Río San Juan system, Mexico. |
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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 (Ref. 26729). |
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Extinct (EX); Date assessed: 04 October 2018 Ref. (130435)
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| harmless |
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