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Pineapple Swordtail

Pineapple Swordtail

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Tank Level:


Minimum Tank Size:

20 Gallons




7.0 - 8.4

General water hardness:     

12 - 30 dH


68 F to 80 F (20 C to 26 C)


Peaceful Community/Semi-Aggressive Community


The Swordtail (Xiphophorous hellerii) is a species of freshwater live-bearing fish, popular for the male’s long sword-like tail. "Pineapple" swordtails have light yellow bodies with bright red-orange horizontal stripes and fins. This listing is for pineapple swordtails of mixed sex. If there is a particular sex that you’re looking for, please call us in advance.

From nose-to-tail, males generally reach 5 inches long, while females can grow up to 6 inches in length. These fish prefer water temperatures from the mid-60’s through the low-80’s, and do best in water that is very hard and slightly alkaline.

Because these fish can get quite large, it is recommended to keep a single swordtail in no less than 15 gallons of water. For every additional swordtail, add 5 gallons. Males can be aggressive towards one another, so it is recommended to only keep one male per every 15 gallons of water. Because these fish are livebearers, they should be kept in a female-to-male ratio of 3:1 (three females per every one male). Swordtails will live for 5 years on average.

While these fish are not particularly aggressive, they will lash out if space is not sufficient. Males can be aggressive towards one another if the tank is not large enough. In a big enough tank, swordtails are very docile and can be kept with almost any other peaceful community fish species.