Xiphophorus helleri red 4cm

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Xiphophorus hellerii  Heckel1848

Green swordtail
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Image of Xiphophorus hellerii (Green swordtail)
Xiphophorus hellerii
Picture by Aland, G.

Classification / NamesCommon names | Synonyms | Catalog of Fishes (gen.sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Cyprinodontiformes (Rivulines, killifishes and live bearers) > Poeciliidae(Poeciliids) > Poeciliinae
Etymology: Xiphophorus: Greek, xiphos = sword + Greek, pherein = to carry (Ref. 45335).   More on author:Heckel.

Environment / Climate / RangeEcology

Freshwater; brackish; benthopelagic; pH range: 7.0 - 8.0; dH range: 9 - 19; non-migratory.   Tropical; 22°C - 28°C (Ref. 52054); 26°N - 12°N

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 14.0 cm TL male/unsexed; (Ref. 26130); 16.0 cm TL (female); common length : 2.8 cm TL male/unsexed; (Ref. 12193)

Short descriptionMorphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 11-14; Anal spines: 0; Anal soft rays: 8 - 10. This species is distinguished by having a medium to large swordtail with a long straight caudal appendage; midlateral stripe may be dusky or brownish (northern populations) or red; 2 additional reddish stripes may be present above midlateral line and one beneath; terminal segment of gonopodial ray 3 produced into a crescent-shaped hook and blade pointed distally; ray 4a curves strongly backward over the blade at an angle greater than 90?; distal serrae of ray 4p reduced in size and number and proximal serrae rather slender; terminal segment of ray 5a produced into a claw, several times larger than the distal serrae of ray 4p (Ref. 52914).