All FishesLoricariidaeHypostominaeHypancistrus

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Scientific NameHypancistrus contradens  Armbruster, Lujan & Taphorn, 2007
Common NamesL201 "BIG SPOT", Orinoco Polka-dot Pleco
Type LocalityRío Ventuari, 23 kilometers northeast of Macuruco, 94 kilometers east of San Fernando de Atabapo, 4°04'50''N, 66°51'31''W, Amazonus, Venezuela
Pronunciationhype an siss truss - kon tra dens
EtymologyA 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. From the Latin contra for opposite, or of difference, and dens for tooth, in reference to the differently shaped teeth in the dentary and premaxilla.
Hop to next section Species Information
Size 126mm or 5" SL. Find near, nearer or same sized spp.
IdentificationOften confused because of the picture in Aqualog and originally thought to be Hypancistrus inspector - Hypancistrus contradens lacks the black edging seen in the unpaired fins of Hypancistrus inspector.

Most easily confused with L201 which is flatter, more finely spotted and is more slender and less high bodied than Hypancistrus contradens which also grows about 2cm longer.
SexingMature males develop teeth like odontodes on their leading pectoral fin rays. These are more noticeable seasonally - presumably they are enlarged during the reproductive season.
Hop to next section Habitat Information
DistributionBorder area Brazil/Venezuela (Upper rios Orinoco and Negro).
Orinoco, Upper Orinoco, Ventuari (click on these areas to find other species found there)
Orinoco, Upper Orinoco (click on these areas to find other species found there)
Amazon, Middle Amazon (Solimoes), Negro, Upper Negro (click on these areas to find other species found there)
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pH5.0 - 7.5
Temperature25.0-29.0°C or 77-84.2°F (Show species within this range)
Hop to next section Husbandry Information
FeedingUnlike the popular opinion of many other loricariids, Hypancistrus are more carnivores than algae eaters. This is backed up by a small and lightly toothed mouth that indicates they are poor algae scrapers. Provide small and frequent supply of mainly meaty foods such as dry discus food, bloodworm and even brineshrimp with the infrequent offering of flake or algae tablets.
FurnitureSand, primarily rocks and optionally driftwood. Caves made out of slate plates, bamboo or PVC pipe.
CompatibilitySuitable with most fish, as long as they are not too large or territorial about bottom-space.
Suggested TankmatesSmall 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.
BreedingBreeds in a cave in typical Hypancistrus manner. Cave around 2.5cm/1"-5cm/2" diameter/diagonal and around 15cm/6" deep. Male cares for the brood for approximately 14 days. The clutch is around 20-50 eggs, depending on the size and condition of the female.
Hop to next section Further Information
ReferencesAqualog shows an out-of-water L270 (or possibly L129) either way it's not this fish.
Copeia 2007(1) 62-79
Registered KeepersNone.
Breeding ReportsNone.
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Last Update2018 Jul 12 18:40 (species record created: 2001 Aug 27 00:00)