''Harttiella longicauda'' is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in mountainous areas in the vicinity of Trinité Massif and Balenfois Massif in northern French Guiana. The species reaches 5.2 cm (2 inches) in

standard length Fish measurement is the measuring of individual fish and various parts of their anatomies. These data are used in many areas of ichthyology, including taxonomy and fisheries biology. Overall length * Standard length (SL) is the length of a fish m ...

. It is known to occur alongside the species '' Characidium fasciadorsale'', '' Krobia itanyi'', '' Lithoxus planquettei'', and ''

Rhamdia quelen ''Rhamdia'' is a genus of three-barbeled catfishes found in Mexico, Central and South America. These catfishes are nocturnal, opportunistic carnivores, found in a wide range of freshwater habitats. This genus includes a number of troglobitic mem ...

'', as well as members of the genera '' Ancistrus'', ''

Guyanancistrus ''Guyanancistrus'' is a genus of suckermouth armored catfishes. Species There are currently 8 recognized species in this genus: * '' Guyanancistrus brevispinis'' ( Heitmans, Nijssen & Isbrücker, 1983) * ''Guyanancistrus brownsbergensis'' Mo ...

'', ''

Melanocharacidium ''Melanocharacidium'' is a fish genus in the family Crenuchidae (South American darters). They are found in the Amazon, Orinoco and Araguaia basins, as well as river basins of the Guianas. They are small fish, up to around in standard length. ...

'', and ''

Rineloricaria ''Rineloricaria'' (from the Greek, ''rhinos'' meaning ''nose'', and the Latin, ''lorica'' meaning '' cuirass of leather'') is a genus of freshwater tropical catfish (order Siluriformes) belonging to the family Loricariidae. They are commonly c ...

''. The species was described in 2012 as part of a taxonomic review of members of the loricariid tribe Harttiini native to the

Guianas The Guianas, sometimes called by the Spanish loan-word ''Guayanas'' (''Las Guayanas''), is a region in north-eastern South America which includes the following three territories: * French Guiana, an overseas department and region of France * ...

References

Harttiini Fish described in 2012 Catfish of South America Fish of French Guiana {{Loricariinae-stub