Actinopteri (ray-finned fishes) > Cyprinodontiformes
(Rivulines, killifishes and live bearers) > Poeciliidae
(Poeciliids) > Poeciliinae
Etymology: Poeciliopsis: Greek, poikilos = with a lot of colours + Greek, opsis = appearance (Ref. 45335). More on authors: Baird & Girard.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic; non-migratory; depth range - m (Ref. ), usually - m (Ref. ). Subtropical; 25°C - 28°C (Ref. 2059); 34°N - 29°N
North America: in Gila River system in New Mexico and Arizona and streams south to western Mexico (Ref. 5723). Occurs naturally in the Colorado and Yaqui river basins at altitudes ranging from sea level to 1500 m. Note that high altitude occurrences are most commonly associated with outflows and springs.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 6.0 cm TL male/unsexed; (Ref. 5723); common length : 3.5 cm TL male/unsexed; (Ref. 12193); max. reported age: 1.00 years (Ref. 12193)
Formerly occurred from Frisco Hot Spring, New Mexico, to near the mouth of the Gila River: it was perhaps more widespread in spring-fed creeks and marshes of southern Arizona between 900 and 1500 m above sea level. Inhabits vegetated springs and margins, pools and backwaters of creeks and small to medium rivers. Usually found in shallow, warm water.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)
IUCN Red List Status (Ref. 124695)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00444 - 0.02253), b=3.11 (2.92 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (tmax=1).
Vulnerability (Ref. 59153
): Low vulnerability (19 of 100) .