Hypostomus yaku | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Siluriformes |
Family: | Loricariidae |
Genus: | Hypostomus |
Species: | H. yaku
|
Binomial name | |
Hypostomus yaku |
Hypostomus yaku is a species of South American armoured catfish from the family Loricariidae. It is only known from the Rio Quente, a small thermal stream in the Rio Paranaíba drainage of the upper Paraná basin, Brazil. [2] H. yaku is unusual when compared to other species of Hypostomus in that it tolerates warm water up to 34 °C (93 °F) and only attains a relatively small size, growing to 70.8 mm (2.79 in) SL. [2]
H. yaku can be distinguished from the other members of Hypostomus, some 180 plus species, [3] by the presence, in mature adults, of hypertrophied odontodes arranged randomly along its flanks and caudal peduncle. [2] This characteristic is also found in species of other Hypostominae genera, Aphanotorulus, Peckoltia and Squaliforma, but can be distinguished by several keys (see Martins et al. 2014). [2] H. yaku is most similar to two other species found in the same region, H. nigromaculatus and H. paulinus, but can differentiated by a lack of dark spots (versus presence in H. nigromaculatus) [4] and by smaller adult size (70.8mm SL versus 135 mm (5.3 in) SL in H. paulinus). [2]
Hypostomus yaku | |
---|---|
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Siluriformes |
Family: | Loricariidae |
Genus: | Hypostomus |
Species: | H. yaku
|
Binomial name | |
Hypostomus yaku |
Hypostomus yaku is a species of South American armoured catfish from the family Loricariidae. It is only known from the Rio Quente, a small thermal stream in the Rio Paranaíba drainage of the upper Paraná basin, Brazil. [2] H. yaku is unusual when compared to other species of Hypostomus in that it tolerates warm water up to 34 °C (93 °F) and only attains a relatively small size, growing to 70.8 mm (2.79 in) SL. [2]
H. yaku can be distinguished from the other members of Hypostomus, some 180 plus species, [3] by the presence, in mature adults, of hypertrophied odontodes arranged randomly along its flanks and caudal peduncle. [2] This characteristic is also found in species of other Hypostominae genera, Aphanotorulus, Peckoltia and Squaliforma, but can be distinguished by several keys (see Martins et al. 2014). [2] H. yaku is most similar to two other species found in the same region, H. nigromaculatus and H. paulinus, but can differentiated by a lack of dark spots (versus presence in H. nigromaculatus) [4] and by smaller adult size (70.8mm SL versus 135 mm (5.3 in) SL in H. paulinus). [2]