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Asian Stone Catfish
Hara jerdoni
Also known as Stone Catfish, Asian Stone Cat, Moth Catfish, Indian Stone Catfish
Animalia›Chordata›Actinopterygii›Siluriformes›Erethistidae
📍 Brahmaputra & Ganges drainages, India & Bangladesh
The Asian Stone Catfish is a tiny, cryptic fish reaching barely 3 cm (1.2 in), with a flattened, mottled brown-grey body covered in rough, granular skin that mimics pebbles and leaf litter. It is a peaceful, reclusive bottom dweller that spends most of its time motionless among substrate and debris, making it an excellent micro-predator for nano and species-appropriate community setups.
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Care Guide
Diet
Hara jerdoni is a carnivorous micro-predator that thrives on small live and frozen foods such as micro worms, baby brine shrimp, daphnia, and finely chopped bloodworms. It will rarely accept dry foods initially, though some individuals can be trained onto high-quality sinking micro pellets over time. Feeding should occur at night or in dim lighting, as this species is largely nocturnal and will be outcompeted by more active tankmates during daylight hours.
Behavior
This species is highly sedentary and cryptic, spending the majority of its time wedged among pebbles, driftwood, or leaf litter where its mottled coloration provides near-perfect camouflage. It is entirely peaceful and poses no threat to any tankmate it cannot swallow whole, though it may be easily outcompeted for food by faster or more boisterous species. A group of four or more individuals is recommended, as they appear more comfortable and active when kept with conspecifics.
Breeding
Breeding Hara jerdoni in captivity is uncommon but has been achieved in well-maintained, species-appropriate setups with cool, highly oxygenated water and abundant hiding places. Spawning typically occurs among fine-leaved plants or moss, where small clutches of eggs are deposited; parental care is minimal to absent. Raising fry requires infusoria or commercially prepared micro fry foods, as the juveniles are extremely small upon hatching.
Tank Mates
Similar small size and cool-water preference; active in upper zones and will not compete directly with the bottom-dwelling catfish.
Peaceful, small-bodied fish that occupies mid-water and poses no competition or threat to Hara jerdoni.
Peaceful bottom dweller of comparable size; both species share similar water parameter needs, though monitor food competition.
Tiny, peaceful nano fish that stays in upper to mid zones and shares soft, slightly acidic water preferences.
Useful algae cleaners that are large enough not to be eaten; both species coexist peacefully in well-planted setups.
Completely non-competitive, assists with biofilm and algae control, and will not disturb the reclusive catfish.
Common Diseases
Ich (White Spot Disease)
Fine white spots resembling salt grains on body and fins, flashing against surfaces, lethargy
Raise temperature gradually to 26 C if tolerated, treat with a half-dose of ich medication as scaleless fish are sensitive; ensure excellent water quality throughout treatment.
Bacterial Skin Infection
Reddening, ulceration, or fuzzy patches on the rough skin; loss of appetite and lethargy
Improve water quality immediately with partial water changes; treat with a mild broad-spectrum antibiotic such as kanamycin at reduced dose appropriate for scaleless catfish.
Fungal Infection
White or grey cotton-like growths on body, fins, or around the mouth
Treat with antifungal medication such as methylene blue or a commercial antifungal product at half the recommended dose; remove carbon from filter during treatment and maintain pristine water conditions.
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Quick Facts
- diet
- Small live and frozen invertebrates; micro worms, daphnia, bloodworms
- lifespan
- 3-5 years
- max size
- 3 cm (1.2 in)
- tank size
- 10 gallons minimum
Water it likes
- ph
- 6.0-7.5
- ammonia
- 0 ppm
- nitrate
- <20 ppm
- hardness
- 2-10 dGH
- temperature
- 64–75°F (18–24°C)
Legality
No state or federal restrictions on record for this species.
Not legal advice, and possibly incomplete or out of date. Rules vary by state and locality and change over time — always confirm the current regulations with your state wildlife or agriculture agency before buying, keeping, or shipping this species.