Pogonopoma

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Pogonopoma
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Siluriformes
Family: Loricariidae
Subfamily: Rhinelepinae
Genus: Pogonopoma
Regan, 1904 [1]
Type species
Plecostomus wertheimeri
Synonyms [1]

Pogonopoma is a genus of freshwater ray-finned fishes belonging to the family Loricariidae, the armored catfishes, and the subfamily Rhinelepinae, the rhinelepine plecos. The fishes in this genus are found in rivers in south and southeast Brazil.

Contents

Taxonomy

Pogonopoma is one of three genera currently valid in the subfamily Rhinelepinae. Pogonopomoides, previously a valid genus, was placed in synonymy with Pogonopoma. [2] This genus and Rhinelepis have a sister group relationship. [2] The subfamily Rhinelepinae is classified in the family Loricariidae within the suborder Loricarioidei of the order Siluriformes, the catfishes. [3]

Species

Pogonopoma contains the following valid species: [4]

Appearance and anatomy

As loricariids, Pogonopoma species all exhibit a suckermouth and an at least slightly flattened ventral surface. However, unlike many loricariids, they have circular pupils, which differs from most members of the family that have an omega iris. Pogonopoma species are heavily armored except on their abdomen (the belly in the case of loricariids), which is relatively unplated. [2] [5]

P. wertheimeri is a cylindrically shaped loricariid. The cheek is covered in long, thin, non-evertible odontodes that form a dense patch. [5]

P. parahybae appears to be more of an intermediate between P. wertheimeri and Rhinelepis . It is fairly flattened, and also has longer pectoral and pelvic fins compared to other species of the tribe Rhinelepini. The gill openings are not as large as those in Rhinelepis. Also, this species lacks long cheek odontodes and the adipose fin. [5]

P. obscurum, unlike P. wertheimeri, simultaneously lacks an adipose fin and cheek odontodes. Its dorsal fin base is also longer than of other members of this genus. [2]

References

  1. 1 2 3 Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Genera in the family Rhinelepinae". Catalog of Fishes . California Academy of Sciences . Retrieved 26 December 2025.
  2. 1 2 3 4 Quevedo, Rodrigo; Reis, Roberto E. (2002). Schaefer, S. A. (ed.). "Pogonopoma obscurum: A New Species of Loricariid Catfish (Siluriformes: Loricariidae) from Southern Brazil, with Comments on the Genus Pogonopoma" (PDF). Copeia . 2002 (2): 402–410. doi:10.1643/0045-8511(2002)002[0402:POANSO]2.0.CO;2. S2CID   85769730.
  3. ↑ Richard van der Laan; Ronald Fricke (eds.). "Eschmeyer's Catalog of Fishes Classification". Eschmeyer's Catalog of Fishes . California Academy of Sciences . Retrieved 26 December 2025.
  4. ↑ Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Species in the genus Pogonopoma". Catalog of Fishes . California Academy of Sciences . Retrieved 26 December 2025.
  5. 1 2 3 Armbruster, Jonathan W. (1998). "Phylogenetic Relationships of the Suckermouth Armored Catfishes of the Rhinelepis Group (Loricariidae: Hypostominae)". Copeia . 1998 (3): 620–636. doi:10.2307/1447792. JSTOR   1447792.
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