Redtail Splitfin Goodeid Care Guide
Xenotoca doadrioi · Freshwater Fish
What Redtail Splitfin Goodeid look like
Xenotoca doadrioi, commonly known as the Redtail Splitfin Goodeid, exhibits a fusiform body shape, reaching a maximum adult size of approximately 10-25 cm. The species displays notable sexual dimorphism, with males being more vibrantly colored than females, showcasing an olive-green body adorned with a striking red-orange caudal fin, which serves as a key identifying feature. The dorsal fin is elongated and slightly pointed, while the anal fin is also extended, contributing to its streamlined appearance. The lateral line is well-defined, aiding in hydrodynamic sensing, and the dentition is adapted for an omnivorous diet, featuring small, conical teeth suitable for grasping both plant matter and small invertebrates. Defensive adaptations include a relatively small size and schooling behavior, which may help reduce predation risk.
Behavior & temperament
The Redtail Splitfin Goodeid is primarily a benthic and pelagic dweller, often found in shallow waters of its native Mexican habitat. This species exhibits a social structure characterized by loose schooling behavior, although it can also be observed in solitary instances. Breeding behavior is viviparous, with females giving birth to live young rather than laying eggs. The temperament of this species is generally peaceful, although males may display territorial aggression during breeding seasons, particularly when competing for mates.
Diet & feeding
In the wild, the Redtail Splitfin Goodeid is an omnivore, consuming a varied diet that includes algae, detritus, and small invertebrates. In captivity, it requires a balanced diet consisting of high-quality flake food, frozen or live foods such as brine shrimp and daphnia, and plant matter to ensure optimal health.
Behind the name
Xenotoca (strange mouth); doadrioi (named in honor of a specific individual or locality).
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
Keeping Redtail Splitfin Goodeid?
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