Cat-eLog Right Loricariidae Right Hypostominae Right The genus Lasiancistrus

Down Summary of lasiancistrus
Pronounced LASS ee an SISS truss
Etymology Greek, lasios, -a, -on = hairy + Greek, agkistron = hook
Identification Adult Lasiancistrus can be separated from all other loricariids by the presence of whisker-like odontodes on the cheeks. In addition, they have evertible cheek odontodes; three rows of plates on the caudal peduncle; and a modified, bar-shaped opercle. The caudal fin is slightly emarginate to forked, with the lower lobe longer than upper. Nuptial males have tentacules on the pectoral-fin spines longer than their associated odontodes; and transluscent tentacules on the snout that have odontodes associated with them. Nuptial males lack hypertrophied odontodes on top of the head and lack long, bristle-like odontodes on the leading edge of the pectoral-fin spine.
Sexing Snout of nuptial males almost square (vs. rounded in females and juveniles). Adult males of most species (except Lasiancistrus tentaculatus) with whisker-like odontodes at anterolateral corner of snout; males of L. tentaculatus have tentacules instead of whisker-like odontodes along anterior margin of snout. Nuptial males have tentacules longer than their associated odontodes on the pectoral-fin spine.
Size Smallest 75mm, largest 198mm, average 135mm, most commonly 150mm. All SL.
Species There are 24 "species" in the database
Keepers 21 species (87%) are being kept by registered keepers
New spp. / time
1750 1770 1790 1810 1830 1850 1870 1890 1910 1930 1950 1970 1990 2010 
Distribution

Log in to view data on a map.
Down Most Kept Species
1.
Lasiancistrus tentaculatusLasiancistrus tentaculatus
(31.71%)
2.
Lasiancistrus heteracanthusLasiancistrus heteracanthus
(18.29%)
3.
Lasiancistrus sp. (L178)Lasiancistrus sp. (L178)
(14.63%)
4.
Lasiancistrus sp. (L033)Lasiancistrus sp. (L033)
(7.32%)
5.
Lasiancistrus sp. (1)Lasiancistrus sp. (1)
(4.88%)
6.
Lasiancistrus sp. (L479)Lasiancistrus sp. (L479)
(2.44%)
7.
Lasiancistrus sp. (L228)Lasiancistrus sp. (L228)
(2.44%)
8.
Lasiancistrus volcanensisLasiancistrus volcanensis
(2.44%)
9. Lasiancistrus wiwa (1.22%)
10.
Lasiancistrus planicepsLasiancistrus planiceps
(1.22%)
11.
Lasiancistrus schomburgkiiLasiancistrus schomburgkii
(1.22%)
Down Genus Thumbnails