PlanetCatfish.com - Hypancistrus seideli (Loricariidae) Cat-eLog

Male
Close-up of head
Feeding on prawns
Close-up of head of female
Close-up of head of male
Male with brood
Male guarding eggs in pipe cave
Juveniles in spawning cave
Video
Young juvenile
Fry with yolk sac
Three week old L260 and four week old L066 (top)
Eggs of L066(right) and L046
Youngster
Three month old juvenile
Female
Two day old fry
Ventral view
Dorsal view
Close-up of head, male
Juvenile
Pair spawning
Close-up of caudal fin
Close-up of caudal fin

Cat-eLog Data Sheet
Scientific Name	**Hypancistrus seideli** Sousa, Sousa, Oliveira, Sabaj Pérez, Zuanon & Rapp Py-Daniel, 2025
Common Names	L066, King Tiger Pleco Acari Pão (Brazilian), Finbroderet Sugemalle (Danish), Network Pleco, Scribbled Pleco
Type Locality	Vitória do Xingu, Itaubinha, pedral, Pará State, Brazil, 02°53'21"S, 51°56'26"W.
Pronunciation	hype an siss truss
Etymology	A contraction of the Greek hypo (meaning less than) and ancistrus, an allusion to the reduced number of teeth (particularly in the lower jaw) found in this genus.
Articles	- Shane's World Reproduction Spawning L066
Species Information
Size	120mm or 4.7" SL. Find near, nearer or same sized spp.
Identification	A distinctive L number that is most often confused with a few other similarly patterned species, such as L333, L318, L399, L400 and L401. Youngsters however are quite different from the adults. Both fishes have a light base with dark lines. L066 has a paler base colouration than L333 where L333 has a yellow/light brown base colouration, and more slender. Both L066 and L333 are from Rio Xingu L066 has even/straight lines in the fins, other similar fish do not L318 and L401 comes from different rivers other than RIo Xingu, so if capture location is available, then the difference is very obvious. Both of these fishes have a dark base colouration with lighter lines. L318 also has more wide areas of dark colour and the lighter lines are often broken. L401 has narrower dark areas, but still many broken lines.
Sexing	Adult males develope teeth-like odontodes around the head and the pectoral fins. Viewed from above the female looks much more massive than the male.
Habitat Information
Distribution	Lower Xingu. Amazon, Lower Amazon, Tocantins (click on these areas to find other species found there) Amazon, Lower Amazon, Xingu (click on these areas to find other species found there) Login to view the map.
IUCN Red List Category	Not Evaluated
pH	5.8 - 7.0
Temperature	25.0-29.0°C or 77-84.2°F (Show species within this range)
Other Parameters	This fish prefers good current and high oxygen levels.
Husbandry Information
Feeding	Carnivore - feed with bloodworms, mussel, sinking prepared food (such as Tetra bits), carnivore wafers, shrimp pellets and so on. User data.
Furniture	A hiding space for each fish is required.
Compatibility	Somewhat territorial towards conspecifics.
Suggested Tankmates	Small tetras and other similar small fish. Also Corydoras. Care has to be taken to ensure that they get enough food, as they can be a bit shy and slow to grab food when available.
Breeding	See Shane's World article link below.
Breeding Reports	There are 27 breeding reports, read them all here.
Further Information
Reference	Neotropical Ichthyology v. 23 (no. 1): e240080, pp 11, Figs. 5-7.
Registered Keepers	There are 514 registered keepers, view all "my cats" data.
Wishlists	Love this species? Click the heart to add it to your wish list. There are 16 wishes to keep this species, see who wants what.
Spotters	Spotted this species somewhere? Click the binoculars! There are 119 records of this fish being seen, view them all.
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	LFS label creator ARN ref:1.4.7.174
Last Update	2025 May 19 11:42 (species record created: 2001 May 05 00:00)