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Orange Swordtail
Xiphophorus hellerii
Animalia›Chordata›Actinopterygii
Variety of Swordtail · orange
📍 Central America
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.
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.
Tank Mates
Similar size and water needs, but males may compete or nip at guppy fins; monitor closely
Peaceful schooling fish that occupy different water zones and have compatible temperature requirements
Peaceful algae eaters that stay on substrate and do not compete for food or space
Harmless detritivores that help maintain tank cleanliness without competing with swordtails
Provides essential cover for fry and helps reduce aggression through visual barriers
Nocturnal algae eater that occupies different niche; ensure adequate hiding spots
Common Diseases
Fin Rot
Frayed, discolored, or deteriorating fins; may appear white or black at edges
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)
Small white spots on body and fins, rapid breathing, lethargy, and rubbing against objects
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
Fine golden or rust-colored dust on body, clamped fins, rapid breathing, and loss of appetite
Dim lighting, raise temperature to 28°C, treat with copper-based medication or salt, and ensure excellent water quality with frequent changes
Dropsy
Bloated abdomen, scales standing out like a pinecone, lethargy, and loss of appetite
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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Varieties
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