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FishbeginnerFreshwater

Orange Swordtail

Xiphophorus hellerii

AnimaliaChordataActinopterygii

Variety of Swordtail · orange

📍 Central America

Ask Finn

The Orange Swordtail is a vivid orange color morph, retaining the male's distinctive elongated lower tail sword. Hardy and fast-moving, it does best in tanks with at least 30 gallons and peaceful tankmates.

Size4.5"
Min Tank20g
School3+
peaceful
Zonemid

Care Guide

Diet

Orange Swordtails are omnivores that thrive on a varied diet of high-quality flake food, small pellets, and regular supplements of live or frozen foods like brine shrimp and bloodworms. Feed once daily in amounts they can consume within 2-3 minutes, and include vegetable matter such as blanched spinach or algae wafers 2-3 times weekly.

Behavior

These are active, fast-moving fish that spend most of their time in the middle water column, constantly exploring and foraging. Males are territorial and may chase females or other males, so adequate space and visual barriers are essential. They are generally peaceful but may nip at slower-moving or long-finned tankmates.

Breeding

Breeding in captivity is relatively easy as swordtails are livebearers that reproduce readily in established tanks with adequate vegetation. Females produce 20-100 fry every 4-6 weeks; provide dense plants like Java Moss or Water Sprite for fry to hide and survive. Separate fry to a nursery tank or heavily planted area to prevent predation by adults.

Common Diseases

Fin Rot

Symptoms

Frayed, discolored, or deteriorating fins; may appear white or black at edges

Treatment

Perform 25% water changes every 2-3 days, improve water quality, and treat with aquarium salt (1 teaspoon per 5 gallons) or antibacterial medication if severe

Ich (Ichthyophthirius multifiliis)

Symptoms

Small white spots on body and fins, rapid breathing, lethargy, and rubbing against objects

Treatment

Raise temperature gradually to 28-29°C, treat with aquarium salt or commercial ich medication for 7-10 days, and perform daily water changes

Velvet Disease

Symptoms

Fine golden or rust-colored dust on body, clamped fins, rapid breathing, and loss of appetite

Treatment

Dim lighting, raise temperature to 28°C, treat with copper-based medication or salt, and ensure excellent water quality with frequent changes

Dropsy

Symptoms

Bloated abdomen, scales standing out like a pinecone, lethargy, and loss of appetite

Treatment

Isolate affected fish, perform frequent water changes, feed high-quality food, and treat with antibiotics if bacterial; prognosis is often poor

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