Redtail Splitfin Goodeid

Xenotoca doadrioi

Redtail Splitfin Goodeid is a all-zone swimmer.

Semi-AggressiveAll-zone swimmerBeginner – Intermediate

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Need help with Redtail Splitfin Goodeid?

Explore compatibility, care or problems using this guide and your aquarium’s conditions.

Quick facts

Adult size: ≤ 2" (≤ 5 cm)
Aquarium size: 40 US gal (150 L) or larger
Care level: Beginner – Intermediate
Temperament: Semi-Aggressive
Swimming zone: All-zone swimmer
pH: 6.5–8
GH: 5–20 dGH
Diet: Omnivore
Lifespan: up to 3 years

Care requirements

Care level: Beginner – Intermediate.

Lifespan: up to 3 years.

Aquarium size and space needs

Minimum aquarium size: 40 US gal (150 L) or larger. Plan the layout and stocking within that limit.

Water parameters

Suitable water: pH 6.5–8, GH 5–20 dGH.

Temperament and compatibility

Redtail Splitfin Goodeid needs careful companion choice because it can be territorial or semi-aggressive.

Swimming zone and behavior

This fish uses multiple areas of the aquarium, so leave enough open swimming space for movement and feeding.

Feeding

As an omnivore, Redtail Splitfin Goodeid should receive a varied diet rather than one repeated food type.

Provide plant-rich and fibrous foods plus suitable animal foods. Avoid permanent temperatures above 25 °C; seasonal winter cooling is necessary.

Before adding this fish

Plan for an aquarium of 40 US gal (150 L) or larger.
Choose other fish carefully around this temperament.
Offer a varied diet suited to this species’ documented feeding habits.

Natural habitat and origin

Origin: Mexico.

Similar fish profiles

Use these profiles to compare fish with similar care level, size, temperature range, or swimming behavior.

Amazon Dwarf Cichlid Apistogramma pertensis Similar care level Same temperament Same swimming zone Intermediate ≤ 1.5" (≤ 3.9 cm) 72–84°F (22–29°C) Black Phantom Tetra Megalamphodus megalopterus Similar care level Same swimming zone Similar diet Beginner – Intermediate ≤ 2" (≤ 5 cm) 72–82°F (22–28°C) Agassiz’s Apistogramma Apistogramma agassizii Similar care level Same temperament Same swimming zone Beginner – Intermediate ≤ 3" (≤ 7.5 cm) 72–84°F (22–29°C) American Flagfish Jordanella floridae Similar care level Same temperament Same swimming zone Beginner – Intermediate ≤ 2.4" (≤ 6 cm) 64–75°F (18–24°C) Argentine Humphead Gymnogeophagus balzanii Similar care level Same temperament Bottom dweller Intermediate ≤ 7.9" (≤ 20 cm) 70–77°F (21–25°C) Blackfin Pearl Killifish Austrolebias nigripinnis Similar care level Same temperament Bottom dweller Beginner – Intermediate ≤ 1.8" (≤ 4.5 cm) 64–72°F (18–22°C)

FAQ

How large does Redtail Splitfin Goodeid get?

Redtail Splitfin Goodeid reaches ≤ 2" (≤ 5 cm).

What aquarium size does Redtail Splitfin Goodeid need?

Use an aquarium of at least 40 US gal (150 L) or larger.

Is Redtail Splitfin Goodeid peaceful?

Redtail Splitfin Goodeid needs more careful companion choice because the temperament data points toward boundaries, space, or similar-sized fish.