Anchor Catfish

Hara jerdoni

Photo of aquarium fish Anchor Catfish
Natural range
  • India area
  • Bangladesh area
  • Ganges-Brahmaputra Delta area
CatfishConservation status: Least concern LC

Family:Erethistidae

Other scientific names: Erethistes jerdoni

Hara jerdoni, also known as the Anchor Catfish or Asian Stone Catfish (scientific name Hara jerdoni), belongs to the family Erethistidae. This species of catfish is remarkably miniature, reaching only 3 cm in length. It is perfectly suited for nano-aquariums, coexists easily with most other fish of similar size, requires simple care, and is quite undemanding. These fish can be confidently recommended to beginner aquarists.

Required aquarium volume
20 L
Size in aquarium
3 cm
Temperature
18 – 24 °C
Temperament
Peaceful (regular)
Parameters
Temperature18 – 24 °C
Water pHSlightly acidic (5.6) – Neutral (7.5)
Water dHMedium hardness (8) – Hard (15)
Water salinityno salt (freshwater)
Size in aquarium3 cm
Lifespan5 years
TemperamentPeaceful (regular)
Toward small fishnot a predator
Required aquarium volume20 L
Lightingdimmed
Substratesandy (regular, light)
Water flownone or stagnant (no flow)
FeedingAny (universal)
CareBoth solitary and in group (flexible)

Frequently asked questions

The essentials: size, tank volume, water parameters and care

How big does Anchor Catfish get?

An adult reaches 3 cm in length. Plan the tank around the maximum size: the fish quickly outgrows a cramped setup.

What size aquarium does Anchor Catfish need?

The minimum recommended volume is 20 L. A smaller tank speeds up nitrate build-up and raises stress levels.

What water parameters does Anchor Catfish need?

Temperature 18–24 °C, pH 5.6–7.5, hardness 8–15 dGH. Stability matters more than exact values: sudden swings are harder on the fish than a small deviation from the ideal.

How long does Anchor Catfish live?

Around 5 years when kept properly. Lifespan depends directly on tank volume, water quality and a varied diet.

Is Anchor Catfish aggressive?

Temperament: peaceful (regular). Keep this in mind when choosing tank mates.

How many Anchor Catfish should be kept together?

Recommended setup: both solitary and in group (flexible). Ignoring this is a common cause of stress and disease.

What does Anchor Catfish eat?

Diet type: any (universal). Feed small portions that are finished within a couple of minutes — overfeeding does more harm than underfeeding.

What is the scientific name of Anchor Catfish?

The scientific name of the species is Hara jerdoni, family Erethistidae. It also appears in the literature as: Erethistes jerdoni.

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