Xiphophorus maculatus (Günther, 1866)
Southern platyfish
Xiphophorus maculatus
photo by Winterbottom, R.

Family:  Poeciliidae (Poeciliids), subfamily: Poeciliinae
Max. size:  4 cm TL (male/unsexed); 6 cm TL (female)
Environment:  benthopelagic; freshwater; pH range: 7 - 8; dH range: 9 - 19, non-migratory
Distribution:  North and Central America: Ciudad Veracruz, Mexico to northern Belize. At least one country reports adverse ecological impact after introduction.
Diagnosis:  Dorsal soft rays (total): 8-10. Distinct line of black pigment midventrally on caudal peduncle absent. Greatest body depth about 2 times in SL. Ventral rays of caudal fin of males not elongated into a sword. Male gonopodium falling short of caudal fin base, without a membranous protuberance, third ray with a strong hook (Ref. 30499).
Biology:  Adults occur in warm springs, canals and ditches with typically slow-moving water, silt bottoms and weedy banks (Refs. 5723; 44091, 44894). Also inhabit creeks and swamps (Ref. 44894). Feed on worms, crustaceans, insects and plant matter (Refs. 7020; 44091). Used for genetic research (Ref. 4537). Several color varieties are popular aquarium fishes, where they attain sexual maturity after 3-4 months and reproduce easily (Ref. 1672). Aquarium keeping: minimum aquarium size 60 cm (Ref. 51539).
IUCN Red List Status: Data deficient (DD); Date assessed: 03 April 2018 Ref. (124695)
Threat to humans: 
Country info:  A few widely separated, small populations exist. Wherever it has been found to occur, it has been the only fish species recorded. Recorded in Hatton, Kotagala and near Nelluwa (Gin River basin).

Entered by: Froese, Rainer - 01.05.91
Modified by: Casal, Christine Marie V. - 24.11.10
Checked by: Froese, Rainer - 24.06.00

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