Pogonopoma

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Pogonopoma
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Siluriformes
Family: Loricariidae
Tribe: Rhinelepini
Genus: Pogonopoma
Regan, 1904
Type species
Plecostomus wertheimeri
Synonyms

Pogonopomoides
Gosline, 1947

Pogonopoma is a genus of armored catfish native to rivers in south and southeast Brazil.

Contents

Taxonomy

Pogonopoma is one of three genera currently valid in the tribe Rhinelepini. Pogonopomoides, previously a valid genus, was placed in synonymy with Pogonopoma. [1] This genus and Rhinelepis have a sister group relationship. [1]

Species

There are currently three recognized species in this genus: [2]

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. [1] [3]

P. wertheimeri is a cylindrically shaped loricariid. The cheek is covered in long, thin, non-evertible odontodes that form a dense patch. [3]

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. [3]

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. [1]

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<i>Pseudorinelepis</i> Genus of fishes

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<i>Acanthicus</i> Genus of fishes

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<i>Rhinelepini</i> Tribe of fishes

Rhinelepini is a tribe of fishes in the subfamily Hypostominae of the armored suckermouth catfish family Loricariidae.

Pogonopoma obscurum is a species of armored catfish endemic to Brazil where it occurs in the upper reaches of the Uruguay River, in the states of Rio Grande do Sul and Santa Catarina, southern Brazil. This species is fairly common and inhabits stretches of the main river and its tributaries, with relatively rapid water currents over bottoms usually formed by rocks and boulders. This species grows to a length of 25 centimetres (9.8 in) SL.

Pogonopoma parahybae is a species of armored catfish endemic to Brazil where it is found in the Paraíba do Sul river basin, where it occurs in areas of mid to strong water current usually associated with rocky substrate. This species grows to a length of 26.3 centimetres (10.4 in) SL.

Pogonopoma wertheimeri is a species of armored catfish endemic to Brazil where it is found in the Mucuri River, São Mateus River, and Doce River. This species is usually found in stretches of river with mid to strong water current and bottom formed by rocks or sand. However, they are also found in the Juparanã lagoon, close to the mouth of the Doce river, which is a lentic habitat. This species grows to a length of 22.3 centimetres (8.8 in) SL.

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References

  1. 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.
  2. Froese, Rainer and Pauly, Daniel, eds. (2011). Species of Pogonopoma in FishBase . December 2011 version.
  3. 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.