Blind Cave Tetra Tropical Fish Information

Astyanax jordani
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)

Blind Cave Tetra Tropical Fish Learn all about the Blind Cave Tetra's feeding habits and food types, its behaviour, its origins, its natural habitats, is it male or female, breeding advice and information, suitable tank mates, its sizing and growth range, minimum tank size, water PH and more. Use our fish community creator tool to plan your tank set up and ensure that the Blind Cave Tetra is the right fish for your aquarium.

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.

Blind Cave Tetra Facts

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

Blind Cave Tetra Help and Advice

If you have a question about keeping Blind Cave Tetra's then please use our Blind Cave Tetra help forum. Join 100's of other fish enthusiasts with 1000's of years experience between them caring for and keeping fish like these.

Check Tankmates for the Blind Cave Tetra fish species

Create a test community that includes the Blind Cave Tetra fish species and other types you'd like to introduce - Assess tank size suitability based on filter type and volume, possible negative interactions and warnings.

Please check your water type for compatibility with your fish, which can be found on the Blind Cave Tetra information box.
Tank Details
question mark  Rename your tank:
question mark  Length: (cm)
question mark  Volume: (Litres)
question mark  Filter type:

* Recent changes to stocking & filter advice October 2018
* This fishtank will only last for this session - to save your tank please Join/Log in

question mark  Max Stocking level: 0cm
0-1 months 20%: 0cm
1-3 months 40%: 0cm
3-6 months 60%: 0cm
question mark  Current stock level: 0cm
Stock percentage: 0%
question mark  Suggested maximum
fish size for your tank:
My Fishtank Quantity Stock cm
There are no fish in your fishtank. To add fish, view a fish profile and click the 'Add to My Fishtank' button

If you'd like to talk about the "Blind Cave Tetra" with our users, then we have a buzzing community of fish enthusiasts where you can talk about tank issues, Blind Cave Tetra fish behaviour, Blind Cave Tetra tank stocking and any other issues related to the Blind Cave Tetra fish or other types you may have.

To save your details in the Fish Community Creator you must be logged in CLICK HERE to log-in or join

Help us keep great tools like this online by becoming a think fish supporter . You will help with our hosting and development costs. From as little as £1.16 per month - Become a Supporter today

Click to read the Latest Tropical Fish discussions from Thinkfish users.

Think Fish Tropical Fish Forum
Tropical Fish Market Place
Fish of the month

Helping Fishkeepers With Their Fishkeeping Needs Since 2006