| Polycentrus | |
|---|---|
 | |
| Polycentrus schomburgkii | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Family: | Polycentridae |
| Genus: | Polycentrus Müller & Troschel, 1849 |
| Type species | |
| Polycentrus schomburgkii Müller & Troschel, 1848 | |
Polycentrus is a genus of small fish belonging to the family Polycentridae. They are found in fresh and brackish water in northern South America and Trinidad. [1] [2]
There are currently 2 recognized species in this genus: [1] [2]
African tetras are a group of characiform fish exclusively found in Africa. This family contains about 18 genera and 119 species. Among the best known members are the Congo tetra, and African tigerfish.
Podocnemis is a genus of aquatic turtles, commonly known as South American river turtles, in the family Podocnemididae. The genus consists of six extant species occurring in tropical South America. Three additional species are only known from fossils.
Leaffishes are small fishes of the family Polycentridae. According to FishBase, it only includes the genera Monocirrhus and Polycentrus from fresh and brackish water in tropical South America. Although included in the Asian leaffish family Nandidae by FishBase, most recent authorities place the African Afronandus and Polycentropsis in Polycentridae. Polycentridae were formerly placed in the order Cichliformes but are now regarded as being incertae sedis in the subseries Ovalentaria in the clade Percomorpha.
Leaf fish or Leaffish may refer to:
The dottybacks are a family, Pseudochromidae, of fishes which were formerly classified in the order Perciformes, but this has been revised and the family is regarded as of uncertain affinities, or incertae sedis within the Ovalentaria, a clade within the Percomorpha. Around 152 species belong to this family.
Colomesus is a genus of pufferfishes confined to tropical South America. Apart from differences in size, the two species are superficially similar, being green above, white below, and patterned with black transverse bands across the dorsal surface. C. asellus is commonly found in the aquarium trade while C. psittacus due to its size and more specialized requirements is not found as often.
The threadfin acara, also known as Heckel's thread-finned acara, is a South American species of cichlid fish. It is the only member of the genus Acarichthys and is native to rivers in the Amazon and Essequibo basins in tropical South America, and has become established in southeastern Asia. It is sometimes found in the aquarium trade.
Franz Hermann Troschel was a German zoologist born in Spandau.
Megalechis is a small genus of freshwater catfish in the Callichthyinae subfamily of the armored catfish family.
Leiarius is a genus of long-whiskered catfishes native to South America. Most of the genus' species are found in the aquarium hobby as ornamental fish.
Erethistes is a genus of South Asian river catfishes.
Stenolicmus is a genus of pencil catfishes native to South America.
Brycon is a genus of fish in the family Characidae found in freshwater habitats in Central and South America, ranging from southern Mexico to northern Argentina. Despite not being closely related to true trout, they are sometimes called South American trout. Members of the genus may also be referred to as piraputanga. They reach a maximum length of 11.9–79.5 cm (4.7–31.3 in) depending on the species involved. Some species perform seasonal breeding migrations.
Arius is a genus of catfishes of the family Ariidae. The genus Arius is distributed in brackish and fresh waters of Eastern Africa and south to Southeast Asia.
Chilodus is a genus of chilodontid headstanders from South America, found in the Orinoco and Amazon Basins, as well as various rivers in the Guianas. The currently described species in this genus are:
the African leaffish is a species of African leaffish native to fresh waters of western Africa. Although placed in the family Nandidae by FishBase and by the 5th Edition of Fishes of the World many recent authorities place Polycentropsis in Polycentridae.
Pristolepis is a genus of fish in the family Pristolepididae sometimes classified in the order Anabantiformes native to freshwater habitats in Southeast Asia and India's Western Ghats. This genus is the only member of its family, a family which, with the families Nandidae and Polycentridae is a group of taxa which are sisters to the Anabantiformes and form part of an unnamed and unranked clade within the series Ovalentaria, closest to the Carangiformes. These three families share the common name "leaffish".
The sand catfish is a species of sea catfish in the family Ariidae. It was described by Johannes Peter Müller and Franz Hermann Troschel in 1849, originally under the genus Bagrus. It is found in subtropical brackish and marine waters in the western Pacific, including China Taiwan, and possibly the Philippines. It reaches a maximum standard length of 29 cm (11 in).
Stenolicmus ix is a species of catfish in the family Trichomycteridae- also called the Pencil or Parasitic Catfishes. It was described from the Curuá River, in the Brazilian state of Pará, which is part of the Amazon River basin.
Labracinus is a genus of ray-finned fishes from the subfamily Pseudochrominae, which is one of four subfamilies in the dottyback family Pseudochromidae. They are found in the tropical western Pacific Ocean.
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