| Dekeyseria | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Siluriformes |
| Family: | Loricariidae |
| Tribe: | Ancistrini |
| Genus: | Dekeyseria Rapp Py-Daniel, 1985 |
| Type species | |
| Dekeyseria amazonica Rapp Py-Daniel, 1985 | |
| Synonyms | |
Zonancistrus | |
Dekeyseria is a genus of suckermouth armored catfishes native to tropical South America.
There are currently six recognized species in this genus: [1]
Dekeyseria was first described with D. amazonica as type species in 1985 by Rapp Py-Daniel. [2] Later, Zonancistrus was described for D. brachyura, D. picta, and D. pulchra. However, this distinction was based on colouration, which is not a useful characteristic in diagnosing genera in loricariids; other genera such as Hypancistrus and Pseudolithoxus also exhibit a range of colouration patterns. [2] Though Dekeyseria is not diagnosed by any unique characteristic, it is still a well-diagnosed genus. [2]
Dekeyseria species are known from the Rio Negro, floodplain lakes of the Amazon, and upper Orinoco. [2]
Dekeyseria is an unusual group of fishes that appear similar to Lasiancistrus . Colour pattern is variable with some species brown with some mottling in the fins, and others with a bold pattern of brown bars on a tan background. In brown species, the abdomen is slightly lighter than the sides. In barred species, the head has large tan spots, the spots becoming larger posteriorly until the bars form as separate entities. There are about eight bars in these barred species. [2] However, Dekeyseria species are also able to change their colours quickly, like a chameleon, to fit their mood or their surroundings. [3] [4]
The species are flattened more than typical Ancistrini, and the lateral plates have median rows of long, sharp odontodes forming keels. Odontodes form well-developed rows above and below the keel rows in all individuals. Tentacles are associated with odontodes on the pectoral fin spine and snout, but are shorter than the supporting odontodes (rather than longer, as in Ancistrus ). [2] These fish range in size from 10.0–21 centimetres (3.9–8.3 inches) SL. [1]
Breeding males develop elongated odontodes along the snout margin anterior to the evertible cheek odontodes and on the pectoral fin rays. In some species, the cheek odontodes are extremely long. The brown species appear to have a greater development of the snout odontodes and the barred species a greater development of the pectoral fin spine odontodes. [2]
Dekeyseria has been reported as an air-breather. [2]
Ancistrus is a genus of nocturnal freshwater fish in the family Loricariidae of order Siluriformes, native to freshwater habitats in South America and Panama. Fish of this genus are common in the aquarium trade where they are known as bushynose or bristlenose catfish. In the aquarium hobby they are often referred to as bushynose or bristlenose plecos instead, but this may lead to confusion as "pleco" usually is used for Hypostomus plecostomus and its allies and is often used as a catchall term for any loricariids remotely resembling that species.
Hypostomus is a genus of catfish in the family Loricariidae. They are native to tropical and subtropical South America. H. plecostomus is the popular freshwater aquarium fish formerly known as Plecostomus plecostomus. The taxonomic structure of the Loricariidae is still being expanded by scientists. Hypostomus is a highly species-rich and widely distributed catfish genus.
Pseudorinelepis genibarbis is a species of armored catfish native to Brazil, Peru, and Ecuador where it is found in the Amazon basin.
Pterygoplichthys, sometimes collectively known as janitor fish, is a genus of South American armored catfishes. These fish are commonly known as sailfin armoured catfish or sailfin plecs, especially in the aquarium trade.
Acanthicus is a genus of large, South American suckermouth armored catfishes native to the Amazon and Orinoco basins, and possibly in Guyana. The name Acanthicus is derived from the Greek, akanthikos meaning thorny, spiny. Fish of this genus are known as lyre-tail plecos. These species are found in large rivers, primarily in areas with a rocky bottom and a moderate or strong current.
Rineloricaria is a genus of freshwater tropical catfish belonging to the family Loricariidae. They are commonly called whiptail catfish because of the long filament that grows out of the tip of the caudal fin that is characteristic of the genus. With the exception of R. altipinnis from Panama, they are native to the rivers of northern and central South America. Some species are regularly seen in the aquarium trade.
Hypancistrus is a genus of loricariid catfish originating from the Amazon basin in South America. Unlike many of the other Loricariids, however, some Hypancistrus species are more carnivorous and enjoy meat in their diet. Hypancistrus species are popular aquarium fish, including such popular fish as the zebra pleco and Queen Arabesque pleco.
Scoloplax is the only genus in the catfish family Scoloplacidae, the spiny dwarf catfishes.
Peckoltia is a genus of small South American armored suckermouth catfishes. Many of these fish are popular aquarium fish.
Pogonopoma is a genus of armored catfish native to rivers in south and southeast Brazil.
Loricariinae is a subfamily of the family Loricariidae of catfish. This subfamily is divided into two tribes and about 30 genera. They are mainly native to freshwater habitats in South America, but there are also several species in Panama and a single (Fonchiiichthys) in Costa Rica.
Neblinichthys is a small genus of suckermouth armored catfishes native to South America.
Nannoptopoma is a small genus of catfishes of the family Loricariidae. This genus includes two species, N. spectabile and N. sternoptychum.
Harttia is a genus of armored catfishes native to South America.
Loricaria is a genus of armored catfish native to South America.
Lasiancistrus is a genus of suckermouth armored catfishes. They are native to South America and Panama.
Paralithoxus is a genus of suckermouth armored catfishes native to tropical South America.
Pseudolithoxus is a genus of suckermouth armored catfishes with five described species from the basins of the Orinoco, Casiquiare and upper Rio Negro in Venezuela. Additionally, a possibly undescribed species is known from the Trombetas and Nhamundá rivers in Brazil.
Pseudolithoxus tigris is a species of armored catfish endemic to Venezuela where it is found in the upper Orinoco and Ventuari River basins. This species grows to a length of 9.4 centimetres (3.7 in) SL.
Yaluwak is a genus of armored catfish native to South America where they are only known from Guyana, containing only a single species Yaluwak primus. It was first described in a 2020 study and placed within the tribe Ancistrini.