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How to look after
Xiphophorus helleri
Swordtail
(Heckel, 1848)

Xiphophorus helleri - Swordtail - Swordtails come in different varieties - pictured is a male lyretail swordtail
Swordtails come in different varieties - pictured is a male lyretail swordtail
more images here

(Other members of the genus Xiphophorus)

ADULT SIZE: 11 cm

WATER CONDITIONS: Moderately hard and alkaline

TEMPERATURE RANGE: 22-28 C

FOOD: Feed Xiphophorus helleri live and dried foods. Not a fussy eater at all.

DISTRIBUTION: This species comes from Guatemala, Mexico

AQUARIUM CARE: One of the most popular aquarium fishes, and a great candidate for the beginners aquarium. The wild type swordtail, or green swordtail is very common, but it also comes in many other colour forms and shapes: typically with varying degrees of red, white, yellow and black.

This is a very tough species that can adapt to most water conditions, though preferring slightly harder water. Sexing is easy as the males have a 'sword' on their caudal fin; females are slightly larger and overall more rounded.

This is a great community species, although males can get somewhat aggressive at times, so provide ample hiding places for subdominant males females and fry.

BREEDING: A very easy livebearer that gives birth to large fry. Females can be seperated (breeding trap) when heavily pregnant to avoid unwanted male attention, and to avoid predation of the newly born fry. Even when bred in a well-stocked community tank, some fry will survive. Swordtails will interbreed with platies (Xiphophorus maculatus) if kept in the same aquarium.

Have you bred Xiphophorus helleri? Why not fill in a breeding questionaire?, or examine existing Xiphophorus helleri breeding reports

Similar species to Xiphophorus helleri

Other members of the genus Xiphophorus

Other livebearer species

Other species from Guatemala, Mexico

Xiphophorus helleri
Swordtail

Swordtails come in different varieties - pictured is a male lyretail swordtail

Swordtails come in different varieties - pictured is a male lyretail swordtail

The green swordtail is the wild-type fish. Only the males having the spectacular sword extension to its tail.

The green swordtail is the wild-type fish. Only the males having the spectacular sword extension to its tail.

The red swordtail is a very bright orange-red colour. This young male

The red swordtail is a very bright orange-red colour. This young male's sword is a lot smaller than a fully-grown adult.

An attractive male swordtail

An attractive male swordtail


Xiphophorus helleri
Swordtail
breeding notes

BREEDING: A very easy livebearer that gives birth to large fry. Females can be seperated (breeding trap) when heavily pregnant to avoid unwanted male attention, and to avoid predation of the newly born fry. Even when bred in a well-stocked community tank, some fry will survive. Swordtails will interbreed with platies (Xiphophorus maculatus) if kept in the same aquarium.

Have you bred Xiphophorus helleri? Why not fill in a breeding questionaire?


This page summarises breeding reports provided by visitors to this site, along with some statistical analysis. Please feel free to contribute - whatever your experience!

4 breeders have filled in breeding reports, a summary of the results are shown in the graphs below. You can read the full reports here.

To add details of your experiences of Xiphophorus helleri, why not fill in a Breeding and maintenance Report.

Would Xiphophorus helleri be a good addition to a community tank?
graph1
  1. Never
  2. Doubtful, only with VERY calm fish
  3. Only with species of similar size
  4. Yes, a good community fish

How would you describe the disposition of Xiphophorus helleri?
graph2
  1. Very timid
  2. Slightly timid
  3. Neutral
  4. Somewhat aggresive on occasions
  5. Very aggressive

In which water conditions do you keep these fish?
graph3
  1. Very soft and acidic
  2. Moderately soft and acidic
  3. Neutral
  4. Moderately hard and alkaline
  5. Very hard and alkaline

At what average temperature?
graph4
  1. 10-15°C
  2. 16-19°C
  3. 20-23°C
  4. 24-27°C
  5. 28°C+

How would you describe sex ratios when breeding Xiphophorus helleri? If you are unsure please leave this question unanswered.
graph6
  1. Almost all males
  2. Somewhat male heavy
  3. Roughly equal
  4. Somewhat female heavy
  5. Almost all females

In general, how difficult is Xiphophorus helleri to keep and breed?
graph7
  1. Very easy
  2. Easy
  3. Average
  4. Difficult
  5. Very difficult

How sucessful have you been at breeding Xiphophorus helleri?
graph8
  1. Very unsucessful
  2. Fairly unsucessful
  3. Average
  4. Fairly sucessful
  5. Very sucessful


Remember, each record represents only one persons experience; if you had different results, or used different methods, please share your experiences


Water conditions: Moderately hard and alkaline Water temperature: 24-27oC
Disposition: Somewhat aggresive on occasions Community tank?: Yes, a good community fish
Spawning Method: Adult fish removed from tankBreeding problems: none
Sex ratio: Almost all femalesBreeding difficulty: Very easy
Sucess: Very sucessfulYears Experience: 2
Other Comments: Have had a ratio of 85% female to 15% male. Fed on high protein pellets, black worms and vegetable flakes. unfortunately if female isn't penned and removed after birth she will eat majority of the fry. My spawning method is 1 male per 4 females. None of my males are kept together due to high aggression. Male is kept with females for only 1 month
Date this record created: 5th September 2016Breeding date: 2016
Breeder: ZoeLocation: Australia

Water conditions: Moderately hard and alkaline Water temperature: 24-27oC
Disposition: Active, but not aggresive Community tank?: Yes, a good community fish
Spawning Method: Other (see below)Breeding problems: none
Sex ratio: Somewhat female heavyBreeding difficulty: Very easy
Sucess: Fairly sucessfulYears Experience: 1
Other Comments:
Date this record created: 22nd November 2009Breeding date: 2009
Breeder: Location:

Water conditions: Moderately hard and alkaline Water temperature: 24-27oC
Disposition: Somewhat aggresive on occasions Community tank?: Only with species of similar size
Spawning Method: Spawning MopsBreeding problems: none
Sex ratio: Somewhat male heavyBreeding difficulty: Very easy
Sucess: Fairly unsucessfulYears Experience: 4
Other Comments:
Date this record created: 8th January 2008Breeding date: 2007
Breeder: EjazLocation:

Water conditions: Very hard and alkaline Water temperature: 24-27oC
Disposition: Active, but not aggresive Community tank?: Yes, a good community fish
Spawning Method: Long term (fry appear with adults)Breeding problems: none
Sex ratio: Roughly equalBreeding difficulty: Very easy
Sucess: Very sucessfulYears Experience: 5
Other Comments: An easy livebearer - put them in a tank, and as long as they are not housed with something that will eat the fry, you will soon have a tankful
Date this record created: 6th January 2008Breeding date: 1995
Breeder: Location:

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