Blind Cave Tetra 3cm

The Blind Cave Tetra (Astyanax mexicanus) is one of the most fascinating and unique fish in the freshwater hobby. A cave-dwelling form of the Mexican Tetra, these fish have evolved over thousands of years in complete darkness — losing their eyes and pigmentation entirely, yet navigating their environment with remarkable precision using a highly developed lateral line system. Pale, almost translucent, and endlessly intriguing, the Blind Cave Tetra is a conversation starter like no other. Available at 3cm.

Care Guide

• Tank Size: Minimum 80L | Keep in groups of 6+ for best behaviour
• Water Parameters: pH 7.0–8.0 | Temp 20–25°C | Moderately hard, slightly alkaline preferred
• Diet: Omnivore — quality flake, micro pellets, frozen bloodworm, brine shrimp; not fussy feeders
• Temperament: Peaceful to mildly nippy; best with robust tankmates of similar size
• Tank Setup: Low or no lighting; caves and hiding spots appreciated; smooth substrate
• Skill Level: Beginner
• Max Size: ~8–10cm