Jeweled Splitfin Care Guide
Xenotoca variata · Freshwater Fish
What Jeweled Splitfin look like
Xenotoca variata, commonly known as the Jeweled Splitfin, exhibits a fusiform body shape typical of many livebearers, reaching a maximum adult size of approximately 2-3 inches (5-7.5 cm). Males are particularly striking, adorned with iridescent blue-green spots that contrast sharply against their darker body coloration, while females tend to be more subdued in color, often exhibiting a more uniform appearance. This sexual dimorphism is pronounced, with males also possessing a modified anal fin known as a gonopodium, which is used for reproduction. The species features a well-defined lateral line, which aids in hydrodynamic sensing, and a small adipose fin that contributes to its streamlined shape. Defensive adaptations include a tendency to remain in schools, providing safety in numbers, and their coloration can serve as a form of camouflage among aquatic vegetation.
Behavior & temperament
The Jeweled Splitfin is a social species that typically exhibits schooling behavior, preferring to dwell in the mid to upper water column of its habitat. It is primarily found in shallow, vegetated areas of freshwater streams and ponds in Mexico. During breeding, females give birth to live young, a characteristic of the family Goodeidae, rather than laying eggs. The species displays moderate aggression, particularly among males during mating displays, but is generally peaceful when kept in appropriately sized groups. Their social hierarchy is fluid, with dominant males often displaying more vivid coloration to attract females.
Diet & feeding
In the wild, the Jeweled Splitfin is an omnivore, feeding on a varied diet that includes small invertebrates, plant matter, and detritus. In captivity, they thrive on a balanced diet of high-quality flake food, supplemented with live or frozen foods such as brine shrimp and daphnia to ensure proper nutrition.
Behind the name
Xenotoca (strange mouth); variata (varied or different).
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
Keeping Jeweled Splitfin?
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