Shoal & Stem
Back to Flora & Fauna

No photo yet

Sign in to submit the first photo

FishintermediateFreshwater

Farlowella Catfish

Farlowella acus

AnimaliaChordataActinopterygii

📍 South America

Ask Finn

A slender, twig-like catfish from South America with an extremely elongated body and snout, perfectly camouflaged among plant stems and wood, reaching 6–8 inches. It is a specialized algae grazer that requires driftwood to rasp on, pristine water quality, and soft acidic conditions; it is sensitive to pollutants and best kept by experienced hobbyists.

Size6"
Min Tank25g
peaceful
Zonebottom

Care Guide

Diet

Farlowella catfish are specialized algae grazers that primarily consume biofilm, algae, and decaying plant matter. Supplement their natural grazing with high-quality algae wafers, blanched vegetables (zucchini, spinach), and occasional frozen foods like bloodworms. Feed small amounts daily, as they are continuous grazers that prefer frequent small meals over large feedings.

Behavior

These nocturnal, bottom-dwelling catfish are extremely peaceful and spend most of their time clinging to driftwood or plant stems using their sucker-like mouths, where they blend in remarkably well. They are solitary or found in small groups in the wild and do not interact much with other fish, preferring to remain hidden during the day. They are most active at night when they emerge to graze on algae and biofilm.

Breeding

Breeding Farlowella catfish in captivity is extremely rare and difficult, with very few documented successes in the aquarium hobby. They require very specific conditions including pristine water quality, soft acidic water, and appropriate cave-like spawning sites, which are rarely replicated in home aquariums. Most specimens in the hobby are wild-caught, and captive breeding is not a realistic goal for most hobbyists.

Common Diseases

Ich (Ichthyophthirius multifiliis)

Symptoms

White spots on body and fins, rapid breathing, lethargy, rubbing against surfaces

Treatment

Raise temperature gradually to 28-29°C, perform frequent water changes, use aquarium salt or ich medication; Farlowella are sensitive so use half-doses and monitor closely

Bacterial Infection

Symptoms

Torn or frayed fins, sores on body, cloudy eyes, loss of appetite

Treatment

Perform large water changes immediately, maintain pristine water quality, use antibiotic medication if severe; prevention through excellent filtration is key

Malnutrition/Starvation

Symptoms

Extreme thinness, lethargy, inability to cling to surfaces, pale coloration

Treatment

Increase algae wafers and vegetable supplementation; ensure adequate biofilm growth by reducing tank cleaning frequency; may indicate insufficient algae availability in tank

Stress-Related Decline

Symptoms

Hiding excessively, refusing food, rapid weight loss, susceptibility to disease

Treatment

Improve water quality, add more driftwood and hiding spots, reduce tank disturbances, maintain stable parameters; these fish are sensitive to pollution and require pristine conditions

Community Photos

0 photos

Photos are added when members log a tank with this species and upload a photo in their tank journal. Add your own tank to contribute.

No photos yet — add a tank with Farlowella Catfish to be the first!

Sign in to vote.

Tips from the community 💡

0 tips

Real experiences, care advice, and keeper notes. Finn learns from these too.

Sign in to share your experience.

No community tips yet — be the first to share your knowledge!

Water it likes

ph
6.0–7.5
ammonia
0 ppm
nitrate
<20 ppm
temperature
73–82°F (23–28°C)

Stats

Community tips0
Kept by0 hobbyists