Trisha Shetty (Editor)

Hemiodontichthys acipenserinus

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Kingdom  Animalia
Subfamily  Loricariinae
Phylum  Chordata
Rank  Species
Family  Loricariidae
Tribe  Loricariini
Higher classification  Hemiodontichthys
Order  Catfish
Hemiodontichthys acipenserinus Hemiodontichthys acipenserinus Pinocchio Whiptail Catfish
Genus  Hemicodontichthys Bleeker, 1862
Scientific name  Hemiodontichthys acipenserinus
Similar  Hemiodontichthys, Catfish, Pseudohemiodon, Sturisoma nigrirostrum, Planiloricaria cryptodon

Hemiodontichthys acipenserinus looking for food

Hemiodontichthys acipenserinus is the only species of the monotypic genus Hemiodontichthys, a genus of the family Loricariidae of catfish (order Siluriformes).


Hemiodontichthys acipenserinus Hemiodontichthys acipenserinus Welsfans

Pinocchio whiptail hemiodontichthys acipenserinus


Hemiodontichthys acipenserinus Hemiodontichthys acipenserinus Welsfans

This taxon is often compared with the morphologically similar Reganella depressa; Hemiodontichthys has been considered the sister genus of Reganella on the basis of osteological data. However, the similar external morphology of these two taxa could be interpreted as an evolutionary convergence, as they occupy the same ecological niche. In both, there is a rostrum and the loss of maxillary teeth; these could have evolved independently in different lineages subjected to similar environmental constraints. Considering some of the morphological characteristics of the two species, Hemiodontichthys is now believed to be part of the Loricariichthys group, while Reganella is part of the Pseudohemiodon group.


Hemiodontichthys acipenserinus Hemiodontichthys acipenserinus Welsfans

H. acipenserinus is native to the countries of Bolivia, Brazil, French Guiana, Guyana and Peru where it occurs in the Amazon, Essequibo, Oyapock, and Paraguay River basins.


Hemiodontichthys acipenserinus Hemiodontichthys acipenserinus

H. acipenserinus reaches a length of 13.4 centimetres (5.3 in) SL. It has been reported that populations from the Amazonian region tend to be more slender than those from the Paraguay and Guaporé Rivers.


Hemiodontichthys acipenserinus Hemiodontichthys acipenserinus Nasenharnischwels myfish

H. acipenserinus is a sand dweller that lives partially buried in the substrate, its cryptic coloration providing efficient protection. It lives on the sandy bottom where it feeds on worms and micro-crustaceans.

Hemiodontichthys acipenserinus diszhalinfohalakHemiodontichthysacipenserinus5jpg

As with other representatives of the Loricariichthys group, mature males develop hypertrophied lips for brooding eggs. Mature males develop a huge labial veil and teeth with spoon-shaped crowns; females and juveniles, the crowns are pointed. Unlike most loricariids, they don't have well-developed odontodes on the snout and pectoral fins. Eggs are laid in a mass and held by the male in the fold made by its lips. The males bear the cluster of eggs fixed to their lips, which they provide with ventilation during movement. About one week after hatching, the alevins leave their parent's protection.


Hemiodontichthys acipenserinus Wikipedia

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Planiloricaria cryptodon