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 23 "species" in the database
Keepers 8 species (34%) are being kept by registered keepers
New spp. / time
1750 1770 1790 1810 1830 1850 1870 1890 1910 1930 1950 1970 1990 2010 

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Down Most Kept Species
1. Lasiancistrus tentaculatus (41.67%)
2. Lasiancistrus heteracanthus (21.67%)
3. Lasiancistrus sp. (L178) (18.33%)
4. Lasiancistrus sp. (L033) (8.33%)
5. Lasiancistrus sp. (1) (5%)
6. Lasiancistrus sp. (L228) (1.67%)
7. Lasiancistrus saetiger (1.67%)
8. Lasiancistrus cf. caucanus (1.67%)
Down Genus Thumbnails