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San Marcos Goodeid - (Xenotoca doadrioi)

San Marcos Goodeid - (Xenotoca doadrioi)

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San Marcos Goodeid - (Xenotoca doadrioi)
Fish Details, Description and Information Below:

🐟 San Marcos Goodeid – (Xenotoca doadrioi) – Rare Livebearer for Sale

The San Marcos Goodeid (Xenotoca doadrioi) is a rare and endangered livebearing fish native to freshwater habitats in San Marcos, Jalisco, Mexico. Males are especially eye-catching, displaying bright red-orange coloration on the lower half of their body contrasted with a silvery-blue upper body, while females have a more muted silver-gray appearance.

This species is part of the Goodeidae family, known for their unique reproductive method where females give birth to live young and nourish them internally during development. Due to its threatened status in the wild, aquarium breeding is vital for its conservation.


🔎 Quick Facts – San Marcos Goodeid (Xenotoca doadrioi)

  • 📛 Common Name: San Marcos Goodeid
  • 🔬 Scientific Name: Xenotoca doadrioi
  • 🌍 Origin: San Marcos, Jalisco, Mexico
  • 🎨 Appearance: Males have a metallic blue upper body and vivid red-orange lower half; females are silver-gray with subtle patterning
  • 📏 Max Size: 2.5–3 inches (6–7.5 cm)
  • 💎 Rarity: Rare; endangered in the wild, maintained in aquariums by dedicated breeders

😇 Behavior & Temperament

  • 🐟 Active and moderately aggressive toward other males
  • 👨‍👩‍👧 Best kept in groups with more females than males
  • 🌿 Works well in species-only or peaceful community setups with robust tankmates
  • 🪵 Enjoys heavily planted aquariums with swimming space

🏠 Aquarium & Tank Requirements

  • 📦 Minimum Tank Size: 20+ gallons for a small colony
  • 🌿 Dense planting with open swimming areas
  • 🌊 Moderate water movement and strong filtration
  • 💡 Moderate lighting to bring out colors

💧 Water Parameters – San Marcos Goodeid Care

  • 🌡️ Temperature: 68–75°F (20–24°C)
  • ⚗️ pH: 7.0–8.0
  • 💧 Hardness: Moderately hard to hard water

🍽️ Diet – Omnivorous

  • 🐟 High-quality flake or pellet foods for livebearers
  • 🦐 Frozen foods such as daphnia, brine shrimp, and bloodworms
  • 🌿 Vegetable matter like spirulina flakes, blanched spinach, or zucchini

📋 San Marcos Goodeid Care Overview Table

Feature Details
🌍 Origin San Marcos, Jalisco, Mexico
📏 Max Size 2.5–3 inches (6–7.5 cm)
😇 Temperament Semi-aggressive with males
🏠 Tank Size 20+ gallons
⚗️ pH Range 7.0–8.0
🌡️ Temperature 68–75°F (20–24°C)
🍽️ Diet Omnivorous
🎯 Ideal For Livebearer keepers, conservation breeders

✨ Highlight:

  • The San Marcos Goodeid is not only a striking and active livebearer but also a conservation priority, making it perfect for aquarists who want beauty, activity, and the satisfaction of helping preserve an endangered species.
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