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Blind cave fish (Astyanax jordani) — Characidae

Blind cave fish

Astyanax jordani
Family: Characidae
EN · Endangered

The Blind cave fish (Astyanax jordani) is a freshwater fish of the family Characidae that grows up to 10 cm.

Length
10 cm
Water
Freshwater
Diet
Omnivore
Behaviour
Small groups
Activity
Diurnal
Body shape
Torpedo-shaped
Substrate
Mixed bottom
Danger
Harmless
Range
Northeastern Mexico; underground cave waters.
Edibility
Not eaten

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Description

The Mexican blind cavefish is a characin (Characidae) from underground cave waters in northeastern Mexico. The species is pinkish-white and pigmentless and lacks functional eyes, an adaptation to life in complete darkness; it recently evolved from the surface form Astyanax mexicanus. With its lateral-line system and sense of smell it probes its surroundings. It feeds on organic matter, detritus and small invertebrates. Owing to a very limited range it is considered endangered. It is harmless to humans.

Frequently asked questions

How do you recognise the Blind cave fish?

The Blind cave fish has a torpedo-shaped body, is mainly pink-purple and shows a plain pattern. Blind and without pigment; recently evolved from the surface-dwelling Astyanax mexicanus, endangered due to its limited range.

Where does the Blind cave fish live?

The Blind cave fish lives in fresh water and is mostly found around mixed bottom. Northeastern Mexico; underground cave waters.

How big does the Blind cave fish get?

The Blind cave fish grows to a maximum of about 10 cm.

Is the Blind cave fish dangerous to humans?

No, the Blind cave fish is harmless to humans. None required: this species is harmless to humans.

Is the Blind cave fish edible?

The Blind cave fish is not usually eaten.

More photos

Blind cave fish (Astyanax jordani) — Characidae — 2
Wikimedia Commons — Seb Morič (CC BY-SA 4.0)
Blind cave fish (Astyanax jordani) — Characidae — 3
Wikimedia Commons — Vassil (CC0)
Blind cave fish (Astyanax jordani) — Characidae — 4
Wikimedia Commons — Totti (CC BY-SA 4.0)
Blind cave fish (Astyanax jordani) — Characidae — 5
Wikimedia Commons — Totti (CC BY-SA 4.0)
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All data

Identification

English name
Blind cave fish verified
Scientific name
Astyanax jordani
Family
Characidae
Other names
Sardina Ciega verified

Appearance

Size class
Small verified
Max length (cm)
10.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Pink / purple inferred
Pattern
Plain inferred
Tail shape
Forked inferred
Mouth position
Terminal inferred
Lips
Thin inferred
Barbels
No sourced
Dorsal fins
Two separate inferred
Dorsal spines
No sourced

Habitat & distribution

Water type
Freshwater sourced
Substrate
Mixed bottom sourced
Natural range
Northeastern Mexico; underground cave waters. inferred
Origin
Native sourced

Behaviour & biology

Diet
Omnivore sourced
Diet (detail)
Organic material, detritus and small invertebrates sourced
Social behaviour
Small groups inferred
Territorial
No inferred
Activity
Diurnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Blind and without pigment; recently evolved from the surface-dwelling Astyanax mexicanus, endangered due to its limited range. sourced

For anglers

Edibility
Not eaten sourced
Fishing method
Not a target species for angling; at most an incidental catch or usable as baitfish. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced
First aid
None required: this species is harmless to humans. sourced

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Astyanax

More from the family Characidae

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