AquaticRepublic.com - Farlowella hahni (Loricariidae) All Fishes

Close-up of head
Dorsal view

All Fishes Data Sheet
Scientific Name	**Farlowella hahni** Meinken, 1937
Common Name	Twig Catfish
Type Locality	Western branch of the mouth of Río Paraguay, 14 km north-northeast of Corrientes (Prov. Chaco, Argentina).
Pronunciation	far LOW ella
Etymology	This genus is named after W. G. Farlow, from Harvard University.
Species Information
Size	201mm or 7.9" SL. Find near, nearer or same sized spp.
Identification	The genus <em>Farlowella</em> is distinguished by its elongate and slender body with a pronounced rostrum (of variable length), having the dorsal fin located near the middle of the body and only slightly anterior to the anal fin (vs. having the dorsal fin conspicuously closer to the head than the tail, and significantly further anterior than the anal fin), and having a brownish color with two lateral dark stripes beginning at the tip of the rostrum, passing through the eyes and ending at the tail. A key to the genus can be found <a href="https://www.planetcatfish.com/forum/viewtopic.php?p=324637#p324637">here</a>;.
General Remarks	Visually, F. hahni is not reliably diagnosable from F. oxyrryncha. On average, F. oxyrryncha and has lower ratios of snout-mouth length to dorsal fin spine length (0.75-1.27 vs. 1.06-1.36) and of snout-mouth length to anal fin spine length (0.79-1.44 vs. 1.32-1.50) than does F. hahni. However, the two species occur far apart geographically, so knowledge of the collection location is critical for confirming these identifications.
Habitat Information
Distribution	South America: Middle Paraná River basin. La Plata, Paraná (click on these areas to find other species found there) Login to view the map.
IUCN Red List Category	Least Concern , range map and more is available on the IUCN species page. Last assessed 2021.
Husbandry Information
Suggested Tankmates	Smaller Tetras or Rasboras are suitably mannered - perhaps hatchetfish are best. Avoid fast or "nippy" fishes such as Danios or Barbs. Will do well with <em>Corydoras</em> catfish, but larger catfish or cichlids are to be avoided.
Breeding	Unreported.
Breeding Reports	There is no breeding report.
Further Information
Reference	Blätter für Aquarien- und Terrarienkunde v. 48 (no. 4), pp 77, Fig. 2.
Registered Keepers	There is no registered keeper.
Wishlists	Love this species? Click the heart to add it to your wish list. There is no wish to keep this species.
Spotters	Spotted this species somewhere? Click the binoculars! There are 4 records of this fish being seen, view them all.
Forum BBCode

	Look up F. hahni on PlanetCatfish.com
	Look up F. hahni on Fishbase
	Look up F. hahni on Encyclopedia of Life
	Look up F. hahni on Global Biodiversity Information Facility
	LFS label creator ARN ref:1.4.80.1539
Last Update	2025 Jan 01 12:08 (species record created: 2005 May 20 00:00)