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PEACEFUL AGGRESSIONtop LAYERFreshwater

Swordtail

ScientificXiphophorus hellerii

SPECIMEN SERIALAQ-SPC-SWORDTAILVERIFIED METRIC SHEET
Min Tank Volume
20GGallons / 76 LitersCheck Stocking Capacity →
Temp Envelope
72°-79°F22° - 26° Celsius
60°F90°F
Calculate Heater Wattage →
Acidity Envelope
7.0-8.0pH Scale Boundary
pH 5.0pH 9.0
Adult Specimen Size
4.5"Inches / 11.4 cm

Comprehensive Swordtail Care Guide & Tank Setup

Providing proper Swordtail care begins with establishing an environment that mimics their natural freshwater habitat. To guarantee optimal health, the minimum Swordtail tank size should be at least 20 gallons. While some sources suggest smaller volumes, a larger tank provides water chemistry buffering and crucial swimming space.

Maintaining a stable water environment is critical. The ideal Swordtail temperature envelope ranges from 72°F to 79°F (approx. 22°C to 26°C) with an acidity level strictly bounded between 7.0 and 8.0 pH. Fluctuations outside of these parameters can compromise their immune system.

Fish Food & Nutrition: Providing high-quality fish food for Swordtail is vital to preserve their vivid colors and energy levels. Offer a varied diet consisting of high-protein tropical pellets or flakes, supplemented with live or frozen treats like bloodworms, brine shrimp, and daphnia.

Husbandry & Care Profile: Provide open swimming lanes and a secure lid to prevent jumping. They contribute a moderate bioload and appreciate hard water with plenty of vegetation.

⏳ Swordtail Size & Lifespan Expectations

When planning your aquarium layout, understanding the expected Swordtail size is critical. The average Swordtail max size when fully grown reaches approximately 4.5 inches (approx. 11.4 cm). In some conditions, a particularly healthy, large specimen might grow slightly larger.

How long do they live? The typical Swordtail lifespan averages around several years. Specifically, Expect a lifespan of three to five years for these active swimmers. Giving them plenty of space to swim helps minimize stress. Maintaining excellent water parameters, high-quality nutrition, and low stress will help maximize their longevity.

🧬 Swordtail Male vs Female Differences

Understanding sexual dimorphism is key for breeding projects and managing cohabitation. Comparing a Swordtail male vs female or female vs male Swordtail reveals clear biological and cosmetic differences.

Males develop a long, sword-like extension on the lower ray of their tail fin and possess a gonopodium. Females lack the sword tail and have a normal anal fin.

Cohabitation & Breeding Notes: Can you put a female and male specimen together? Depending on their species behavior, housing female and male Swordtail specimens in the same tank requires careful setup. For highly territorial species, keep them separated. For peaceful community fish, maintain a breeding ratio of multiple females to each male to distribute attention and reduce stress.

🐠 Compatible Swordtail Tank Mates

Finding the right Swordtail tank mates is key to maintaining a peaceful community. Can this species live with other fish? The answer depends on their aggression rating (peaceful).

Avoid keeping just two males, as the dominant one will relentlessly bully the other. Keep them in a harem of one male to several females, or a large group in a spacious tank.

When choosing companion fish, ensure they share similar temperature and pH requirements. Avoid housing them with slow-moving long-finned species if they are known fin-nippers, or with very large predatory fish that might view them as food. For a full compatibility breakdown, check the custom cross-checks and ideal matches listed on this page.

🎨 Popular Swordtail Morphs & Varieties

In the aquarium trade, the Swordtail has been bred selectively to showcase a variety of eye-catching color morphs, tail shapes, and patterns. Some of the most notable strains and varieties include:

Standard SwordtailWild-type SwordtailSelectively bred Swordtail varieties

From deep blue and red shades to intricate koi, marble, or albino strains, choosing the right morph adds incredible visual character to your aquarium.

🏷️ Cost & Buying Guide

Are you looking to find a healthy Swordtail for sale or ready to buy a Swordtail online? Sourcing your fish from high-quality breeders is crucial to starting with healthy specimens.

Highly budget-friendly, making them a popular choice for community aquariums. The average price of a Swordtail varies depending on the specific color morph, fins, and strain rarity. Common varieties are widely available and can easily be purchased for under $30. Rare import show-grade specimens can cost significantly more.

When searching for a supplier nearby, check their reviews and verify that their tanks are clean and free of diseases. Healthy specimens should be alert, active, and showing bright coloration with no signs of lethargy or clamped fins. Avoid purchasing "used" or neglected setups without sanitizing them thoroughly.

✨ Unique Swordtail Name Ideas

Choosing a unique name for your new companion is one of the best parts of the hobby. Here are 5 unique, thematic Swordtail names based on their biological traits:

  • 🐟Bubbles
  • 🐟Finley
  • 🐟Shadow
  • 🐟Splash
  • 🐟Sunny

📚 Media, Art & Aquarium Ornaments

Thanks to their popularity, Swordtail are frequently referenced in books, movies & TV shows, and cast into art sculptures or figurines. In the hobby, they are a beloved subject for custom aquarium decor, photo prints, and artificial ornaments.

If you want to purchase species-specific aquarium decor for a Swordtail, prioritize live plants, smooth river rocks, and clean driftwood. If you buy artificial resin ornaments, verify they have no sharp edges or narrow gaps that could trap or injure active fish.

❓ Frequently Asked Questions

How long do Swordtail live?

Expect a lifespan of three to five years for these active swimmers. Giving them plenty of space to swim helps minimize stress.

What size tank does a Swordtail need?

A Swordtail requires a minimum tank size of 20 gallons (approx. 76 liters) to ensure proper swimming space and stable water parameters.

Can you put two Swordtail together?

Avoid keeping just two males, as the dominant one will relentlessly bully the other. Keep them in a harem of one male to several females, or a large group in a spacious tank.

Can a Swordtail live with other fish?

Yes, depending on their aggression level. The Swordtail has a peaceful aggression level. In general, peaceful tank mates that share the same temperature (72°F to 79°F) and pH (7.0 to 8.0) requirements make the best cohabitants.

Depth Profile

Strata Column

top Layer
Top Zone
Active
Mid Zone
10-20" Depth
Bottom Zone
20"+ Depth

Specimen biology dictates water column placement. The Swordtail primarily patrols the top zone, optimizing its ecological role and feeding strategies.

Ecosystem Bioload Footprint

1.2xWaste Factor

Larger values represent higher bio-waste output, requiring higher filtration volume.

Ideal Cohabitants30 verified

Neon Tetra

Paracheirodon innesi

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Guppy

Poecilia reticulata

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Platy

Xiphophorus maculatus

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Molly

Poecilia sphenops

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Kuhli Loach

Pangio semiperfecta

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Ghost Shrimp

Palaemonetes paludosus

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Amano Shrimp

Caridina multidentata

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Nerite Snail

Vittina natalensis

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Clown Loach

Chromobotia macracanthus

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Bloodfin Tetra

Aphyocharax anisitsi

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Blue Platy Fish

Xiphophorus maculatus

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Ember Tetra

Hyphessobrycon amandae

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Black Skirt Tetra

Gymnocorymbus ternetzi

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African Dwarf Frog

Hymenochirus boettgeri

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Bala Shark

Balantiocheilos melanopterus

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Caution Cohabitants6 flagged

Angelfish

Pterophyllum scalare

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Behavioral caution. Angelfish is semi-aggressive and may bully, chase, or nip the fins of the peaceful Swordtail. Ensure the tank is large and heavily decorated.
Tiger Barb

Puntigrus tetrazona

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Behavioral caution. Tiger Barb is semi-aggressive and may bully, chase, or nip the fins of the peaceful Swordtail. Ensure the tank is large and heavily decorated.
Dwarf Gourami

Trichogaster lalius

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Behavioral caution. Dwarf Gourami is semi-aggressive and may bully, chase, or nip the fins of the peaceful Swordtail. Ensure the tank is large and heavily decorated.
Serpae Tetra

Hyphessobrycon eques

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Behavioral caution. Serpae Tetra is semi-aggressive and may bully, chase, or nip the fins of the peaceful Swordtail. Ensure the tank is large and heavily decorated.
Knight Goby Fish

Stigmatogobius sadanundio

Cross-Check →
Behavioral caution. Knight Goby Fish is semi-aggressive and may bully, chase, or nip the fins of the peaceful Swordtail. Ensure the tank is large and heavily decorated.
Behavioral caution. Assassin Snail is semi-aggressive and may bully, chase, or nip the fins of the peaceful Swordtail. Ensure the tank is large and heavily decorated.

Verified Compatibility Profiles for Swordtail

Systematically explore algorithmic compatibility reports comparing the Swordtail against other common freshwater species: