The Mexican Blind Cave Tetra (Astyanax mexicanus) is a fascinating freshwater fish native to dark cave systems in Mexico. This species has evolved without eyesight, resulting in a lack of functional eyes and pigmentation. Instead, it relies on heightened senses of vibration and smell to navigate and feed. Hardy and peaceful, it is well-suited to community aquariums and is admired for its unique evolutionary adaptations.
Care Guide
Tank Size: Minimum 20 gallons for a small group.
Water Conditions: Temperature 20–25°C (68–77°F), pH 6.5–8.0, Hardness 5–25 dGH.
Diet: Omnivorous; accepts flakes, pellets, and live or frozen foods such as brine shrimp and bloodworms.
Temperament: Peaceful and social; best kept in groups of 5 or more to encourage natural schooling behavior.
Tank Setup: Provide open swimming space with smooth decorations to avoid injury; low lighting is best, but they do not require caves.
Tankmates: Compatible with other peaceful community fish such as danios, rasboras, and small tetras. Avoid aggressive or fin-nipping species.
Lifespan: Typically 5–10 years with proper care.
Key Tip: Their lack of eyesight means they rely heavily on senses of touch and smell—feed in consistent tank areas to help them locate food easily.
Size: 2.5–3cm
WHOLESALE
The Mexican Blind Cave Tetra (Astyanax mexicanus) is a fascinating freshwater fish native to dark cave systems in Mexico. This species has evolved without eyesight, resulting in a lack of functional eyes and pigmentation. Instead, it relies on heightened senses of vibration and smell to navigate and feed. Hardy and peaceful, it is well-suited to community aquariums and is admired for its unique evolutionary adaptations.
Care Guide
Tank Size: Minimum 20 gallons for a small group.
Water Conditions: Temperature 20–25°C (68–77°F), pH 6.5–8.0, Hardness 5–25 dGH.
Diet: Omnivorous; accepts flakes, pellets, and live or frozen foods such as brine shrimp and bloodworms.
Temperament: Peaceful and social; best kept in groups of 5 or more to encourage natural schooling behavior.
Tank Setup: Provide open swimming space with smooth decorations to avoid injury; low lighting is best, but they do not require caves.
Tankmates: Compatible with other peaceful community fish such as danios, rasboras, and small tetras. Avoid aggressive or fin-nipping species.
Lifespan: Typically 5–10 years with proper care.
Key Tip: Their lack of eyesight means they rely heavily on senses of touch and smell—feed in consistent tank areas to help them locate food easily.
Size: 2.5–3cm
WHOLESALE