Phallichthys amates (Miller, 1907)
Merry widow livebearer
Phallichthys amates
photo by Slaboch, R.

Family:  Poeciliidae (Poeciliids), subfamily: Poeciliinae
Max. size:  7 cm SL (male/unsexed); 6 cm TL (female)
Environment:  demersal; pH range: 6 - 8; dH range: 9 - 19, non-migratory
Distribution:  Central America: Atlantic drainages, from southern Guatemala to Costa Rica and Panama.
Diagnosis:  Robust body gray with bluish highlights, deep and almost rhomboid. Males with very long gonopodium that reaches the base of the tail; together with the young, with 6 - 8 dark bars (diffused in females) (Ref. 36880).
Biology:  Occurs mainly in stagnant waters, creeks and river shorelines, over soft bottoms. On the Atlantic versant it lives between 0 and 500 m of elevation, but in the northern Pacific sector is found between 10 and 45 m in the Tempisque and Bebedero drainages; in the Río Tárcoles drainage, where it was probably introduced, it lives between 670 and 1220 m elevation. Inhabits shallow waters with mud or litter substrata in temperatures of 20 to 37°C. Feeds on ooze, detritus, diatoms and occasionally on filamentous algae and aquatic insects (Ref. 36880).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (120744)
Threat to humans:  harmless
Country info:   

Entered by: Capuli, Estelita Emily - 05.08.94
Modified by: Casal, Christine Marie V. - 05.09.02
Checked by: Sa-a, Pascualita - 14.02.95

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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