Blind Cave Tetra
Behaviour Peaceful, active, shoaling, sometimes nippy
Typical size 7cm
Max size 10cm
Tank Area Middle, bottom
Min Tank Size 75cm
Min Number 3
Temp Min: 18℃ Max: 25℃
Feeding Flake, dried, frozen, live foods. Varied diet preffered
pH Range 6.5-8.5
Hardness s,m,h,vh
Blind Cave Tetra Astyanax jordani
  • Blind Cave Tetra Astyanax jordani - thumbnail
  • Close up - Blind Cave Tetra Astyanax jordani - thumbnail

Blind Cave Tetra

Astyanax jordani

The Blind Cave Tetra is an interesting aquarium fish with a lively nature. Its most noticeable characteristic is that the fish possesses no eyes, scince it has evolved in caves with no light, it has no need for sight in its natural environment. Interestingly, the fry and young do have eyes, which then dissapear as the fish matures. Despite its lack of vision, the fish is extremely good at navigation and finding food with other senses, and is often better than other sight enabled fish. In the aquarium the fish are lively and active, constantly exploring their surroundings. Although non-aggressive, they do have a habit of nipping fins, so delicate or long finned fish are best avoided as tankmates. In some cases, this habit can cause lots of problems, so it is excluded from the Compatibility Checker. The fish have no special requirements and can be kept in most water conditions, including cooler water.

This fish is excluded from the Compatibility Checker as it is unsuitable for community aquariums or may require expert care.

Family Characidae (Characins) | Synonyms Anoptichthys jordani, Astyanax fasciatus mexicanus, Anoptichthys hubbsi, Anoptichthys antrobius | Other names Blind Cavefish | Origin North America; Mexico | Breeding Egg scatterer, spawns relatively easy in cooler water | Natural Water Conditions pH 6-8, hard to very hard | Natural Habitat Underground caves | Sexing Males are more slender

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Think Fish Community Creator - Blind Cave Tetra

Please check your water type for compatibility with your fish, which can be found on the Blind Cave Tetra information box.

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