Hoplomyzon atrizona
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| Hoplomyzon atrizona | |
|---|---|
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Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Siluriformes |
| Family: | Aspredinidae |
| Genus: | Hoplomyzon |
| Species: | H. atrizona |
| Binomial name | |
| Hoplomyzon atrizona G. S. Myers, 1942 | |
Hoplomyzon atrizona is a species of banjo catfish endemic to the Lake Maracaibo basin in Venezuela. It grows to a length of 2.7 cm (1.1 in).[2]
Hoplomyzon atrizona was described in 1942 by the American ichthyologist George S. Myers on the basis of a specimen collected from a tributary of the Río Zulia in the Venzuelan state of Táchira, at Estacion Tachira, 60 km north of San Cristóbal. Schultz described the subspecies petroleus in 1944 based on two specimens from the Río Motatán in the Maracaibo Basin, but other authorities have contended that these specimens exhibit only slight differences in pigmentation compared to the nominate, and therefore the validity of petroleus is needs further study.[3][2]
Description
Hoplomyzon atrizona can be told apart from other aspredinids by the presence of four stout papillae on the upper lip and from other species within Bunocephalinae due to its rather elongated and thin rictal barbel and dorsal-fin rays. Compared to Hoplomyzon papillatus, it has only two pairs of mental barbels.[3]