Hypancistrus contradens • Loricariidae • Cat-eLog • PlanetCatfish

Close-up of head
Seven month old juvenile
Three day old fry
Six day old fry
Eight day old fry
Ventral view
Dorsal view
Juvenile a (same fish as marked adult a)
Adult a (same fish as marked juvenile a)
free swimming fry

Cat-eLog Data Sheet
Scientific Name	**Hypancistrus contradens** Armbruster, Lujan & Taphorn, 2007
Common Name(s)	None
Type Locality	Río Ventuari, 23 kilometers northeast of Macuruco, 94 kilometers east of San Fernando de Atabapo, 4°04'50''N, 66°51'31''W, Amazonus, Venezuela
Pronunciation	hype an siss truss - kon tra dens
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. 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.
Species Information
Size	126mm (5") SL. Find near, nearer or same sized spp.
Identification	Often 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.
Sexing	Mature males develop teeth like odontodes on their leading pectoral fin rays. These are more noticeable seasonally - presumably they are enlarged during the reproductive season.
Habitat Information
Distribution	Border area Brazil/Venezuela (Upper rios Orinoco and Negro). Orinoco , Upper Orinoco, Ventuari (hover or click on these areas to show maps or find other species found there) Orinoco , Upper Orinoco (hover or click on these areas to show maps or find other species found there) Amazon, Middle Amazon (Solimoes) , Negro, Upper Negro (hover or click on these areas to show maps or find other species found there)
pH	5.0 - 7.5
Temperature	25.0-29.0°C or 77-84.2°F (Show others within this range)
Husbandry Information
Breeding	Breeds 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.
Further Information
References	Ann. Wien. Mus. Naturges.v. 1 (no. 1) - pp25 Aqualog shows an out-of-water L270 (or possibly L129) either way it's not this fish. Copeia 2007(1) 62-79
Registered Keepers	(1) snowball (k: 3), (2) Ak Viking, (3) mikey, (4) Cory-Diddi, (5) plecoboy, (6) gimmeplec5 (k: 2), (7) plecoready, (8) Zebra46 (k: 8), (9) ThorG, (10) ivokilli, (11) amergim, (12) alga (k: 24), (13) fishfarmer (k: 50), who also notes: "Breeding report on my web site http://cinci-fishfarmer.com/reports/L-201BR.html", (14) Kingkat, (15) Tuti, (16) apistomaster (k: 6), who also notes: "Obtained very small specimens. Very shy species although also attractive.", (17) Bristle nose, (18) HylaChristine, (19) AmLi (k: 5), (20) Brotox (p: 4), (21) Plank (k: 3), (22) Poshpleco, (23) Vierrollenfreak (k: 14), (24) henryrus, (25) Selveste_Preben, (26) kerryteatsjr (k: 7), (27) Freakdaddy (k: 11), (28) chillired, (29) L127 (k: 3), (30) goodmike (k: 3), (31) drgold (k: 15), (32) Qaddiction, (33) Matien (k: 12), (34) CoryLoachFreak, (35) Yann (k: 2), (36) loloveto, (37) Scubaguy, who also notes: "Wild caught. L201", (38) Kenneth Wong, (39) husky_jim (k: 8), (40) briggadane (k: 4), (41) Plecofanatic1989, (42) pureplecs, (43) calsonic, (44) Numbers (k: 12), who also notes: "3 diff blood lines Dave- Sandy001 3-4cm$100 Arrows 2cm $85", (45) worldwide73, (46) Chillired89, (47) Nagy, (48) nvcichlids (k: 4), (49) Lubbe, (50) Tasplec, (51) miq (p: 2), (52) zhallam, (53) Koen (k: 5), (54) Complecs, (55) Joeytoe, (56) krzys (k: 4), (57) turtleboy07, (58) d_frag, (59) bert, (60) Xplode (k: 3), (61) Aquariumfun (k: 28), (62) flavus (k: 3), (63) Holey_Rock_of_Texas (k: 2), (64) BrendanK, (65) oxdeleon, (66) dconnors (k: 18), (67) OlePaulsen (k: 2), (68) amt4470, (69) tinycichlid1 (k: 4), who also notes: "still too small to tell", (70) Blackhawker, (71) TwoTankAmin (k: 30), who also notes: "Several spawns. 1st eaten by corys. 2nd growing out. ", (72) djtonyel (k: 2), (73) drpleco (k: 15), (74) Coco (k: 2), (75) Rita A (k: 4), (76) Rita Aspevik (k: 14), (77) pleco_breeder (k: 4), (78) somename, (79) PlecoCrazy (p: 2, k: 21), (80) Torb (k: 5), (81) cjhoogma, (82) Mapple, (83) Donald (k: 8), (84) Raina, (85) AleGer (k: 12), (86) hankinswood, (87) xander, (88) lorax84, (89) avga, (90) Elwood (k: 4), (91) janne dahle (k: 7), (92) Nabobmob1 (k: 13), (93) FrogSplash, (94) Lihn (k: 5), (95) cdc069 (p: 2), (96) tagamasid1023, who also notes: "Hypancistrus Contradens is one of my favorites! I got my first hypancistrus contradens last July after a very long search in the Chicagoland. This hypan adapted really well in my Oscar tank and grew very rapidly! It started out around 50mm in July then grew to about 90mm by October. Unfortunately, this male hypan died for unknown reasons. My new one (pictured) is from the same LFS and about 50mm but has paler yellow spots compared to my first one. Perhaps this one is a she because of its dull colouration. They labeled it as L 136b, but I think they erred. My ultimate goal is to breed this hypan. But first, I need to maintain this one and determine its sex soon so that I can find a mate for it. Any advice guys?", (97) FFTRIP, (98) fahaka, (99) Sanplec (k: 6), (100) CodOnMyRod, (101) adcc (k: 4), (102) shooter50014 (k: 5), (103) seliel. Click on a username above to see all that persons registered catfish species. You can also view all "my cats" data for this species. Add this species to your "my cats" page.
Breeding Reports	(1) Yann (b: 48), (2) Elwood (b: 23).
More Resources	- Search Planet Catfish for more on Hypancistrus contradens - BBcode (for use in linking to this page from forum posts) - Look up Hypancistrus contradens on AquaticRepublic.com - Look up Hypancistrus contradens on Fishbase, I.T.I.S. or ispecies search. - URL (for use in linking to the species from anywhere on the web)
Hits	54594 hits.
Last Update	2011 Apr 25 16:48 (species record created: 2001 Aug 27 00:00)

Cat-eLog Data Sheet

Hypancistrus contradens Armbruster, Lujan & Taphorn, 2007

None

Río Ventuari, 23 kilometers northeast of Macuruco, 94 kilometers east of San Fernando de Atabapo, 4°04'50''N, 66°51'31''W, Amazonus, Venezuela

Pronunciation

hype an siss truss - kon tra dens

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. 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.

Species Information

Size

126mm (5") SL. Find near, nearer or same sized spp.

Identification

Often 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.

Sexing

Mature males develop teeth like odontodes on their leading pectoral fin rays. These are more noticeable seasonally - presumably they are enlarged during the reproductive season.

Habitat Information

Distribution

Border area Brazil/Venezuela (Upper rios Orinoco and Negro).
Orinoco Show it on a map

, Upper Orinoco, Ventuari (hover or click on these areas to show maps or find other species found there)
Orinoco Show it on a map

, Upper Orinoco (hover or click on these areas to show maps or find other species found there)
Amazon, Middle Amazon (Solimoes) Show it on a map

, Negro, Upper Negro (hover or click on these areas to show maps or find other species found there)

5.0 - 7.5

Temperature

25.0-29.0°C or 77-84.2°F (Show others within this range)

Husbandry Information

Breeding

Breeds 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.

Further Information

References

Ann. Wien. Mus. Naturges.v. 1 (no. 1) - pp25
Aqualog shows an out-of-water L270 (or possibly L129) either way it's not this fish.
Copeia 2007(1) 62-79

Registered Keepers

(1) snowball (k: 3), (2) Ak Viking, (3) mikey, (4) Cory-Diddi, (5) plecoboy, (6) gimmeplec5 (k: 2), (7) plecoready, (8) Zebra46 (k: 8), (9) ThorG, (10) ivokilli, (11) amergim, (12) alga (k: 24), (13) fishfarmer (k: 50), who also notes: "Breeding report on my web site http://cinci-fishfarmer.com/reports/L-201BR.html", (14) Kingkat, (15) Tuti, (16) apistomaster (k: 6), who also notes: "Obtained very small specimens. Very shy species although also attractive.", (17) Bristle nose, (18) HylaChristine, (19) AmLi (k: 5), (20) Brotox (p: 4), (21) Plank (k: 3), (22) Poshpleco, (23) Vierrollenfreak (k: 14), (24) henryrus, (25) Selveste_Preben, (26) kerryteatsjr (k: 7), (27) Freakdaddy (k: 11), (28) chillired, (29) L127 (k: 3), (30) goodmike (k: 3), (31) drgold (k: 15), (32) Qaddiction, (33) Matien (k: 12), (34) CoryLoachFreak, (35) Yann (k: 2), (36) loloveto, (37) Scubaguy, who also notes: "Wild caught. L201", (38) Kenneth Wong, (39) husky_jim (k: 8), (40) briggadane (k: 4), (41) Plecofanatic1989, (42) pureplecs, (43) calsonic, (44) Numbers (k: 12), who also notes: "3 diff blood lines Dave- Sandy001 3-4cm$100 Arrows 2cm $85", (45) worldwide73, (46) Chillired89, (47) Nagy, (48) nvcichlids (k: 4), (49) Lubbe, (50) Tasplec, (51) miq (p: 2), (52) zhallam, (53) Koen (k: 5), (54) Complecs, (55) Joeytoe, (56) krzys (k: 4), (57) turtleboy07, (58) d_frag, (59) bert, (60) Xplode (k: 3), (61) Aquariumfun (k: 28), (62) flavus (k: 3), (63) Holey_Rock_of_Texas (k: 2), (64) BrendanK, (65) oxdeleon, (66) dconnors (k: 18), (67) OlePaulsen (k: 2), (68) amt4470, (69) tinycichlid1 (k: 4), who also notes: "still too small to tell", (70) Blackhawker, (71) TwoTankAmin (k: 30), who also notes: "Several spawns. 1st eaten by corys. 2nd growing out. ", (72) djtonyel (k: 2), (73) drpleco (k: 15), (74) Coco (k: 2), (75) Rita A (k: 4), (76) Rita Aspevik (k: 14), (77) pleco_breeder (k: 4), (78) somename, (79) PlecoCrazy (p: 2, k: 21), (80) Torb (k: 5), (81) cjhoogma, (82) Mapple, (83) Donald (k: 8), (84) Raina, (85) AleGer (k: 12), (86) hankinswood, (87) xander, (88) lorax84, (89) avga, (90) Elwood (k: 4), (91) janne dahle (k: 7), (92) Nabobmob1 (k: 13), (93) FrogSplash, (94) Lihn (k: 5), (95) cdc069 (p: 2), (96) tagamasid1023, who also notes: "Hypancistrus Contradens is one of my favorites! I got my first hypancistrus contradens last July after a very long search in the Chicagoland. This hypan adapted really well in my Oscar tank and grew very rapidly! It started out around 50mm in July then grew to about 90mm by October. Unfortunately, this male hypan died for unknown reasons. My new one (pictured) is from the same LFS and about 50mm but has paler yellow spots compared to my first one. Perhaps this one is a she because of its dull colouration. They labeled it as L 136b, but I think they erred. My ultimate goal is to breed this hypan. But first, I need to maintain this one and determine its sex soon so that I can find a mate for it. Any advice guys?", (97) FFTRIP, (98) fahaka, (99) Sanplec (k: 6), (100) CodOnMyRod, (101) adcc (k: 4), (102) shooter50014 (k: 5), (103) seliel.

Click on a username above to see all that persons registered catfish species. You can also view all "my cats" data for this species.

Add this species to your My Cats species list

Add this species to your "my cats" page.

Breeding Reports

(1) Yann (b: 48), (2) Elwood (b: 23).

More Resources

- Search Planet Catfish for more on Hypancistrus contradens
Link

- BBcode (for use in linking to this page from forum posts)
Look up AquaticRepublic.com

- Look up Hypancistrus contradens on AquaticRepublic.com
Look up Fishbase

- Look up Hypancistrus contradens on Fishbase, I.T.I.S. or ispecies search.
Link

- URL (for use in linking to the species from anywhere on the web)

Hits

54594 hits.

Last Update

2011 Apr 25 16:48 (species record created: 2001 Aug 27 00:00)

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