Friday, June 22, 2007

Unusual Fish---species of Pseudoplatystoma


A revision of the South American tiger shovelnose catfish genus Pseudoplatystoma recognizes eight valid species.In the revision, which is published inthe most recent issue of the journal Zootaxa, Uriel Buitrago-Suárez and Brooks Burr recognize eight valid species of Pseudoplatystoma, of which three are described as new: P. corruscans, P. fasciatum, P. magdaleniatum, P. metaense, P. orinocoense, P. punctifer, P. reticulatum, and P. tigrinum.The authors examined a large number of specimens from throughout South America and revalidated two species (P. punctifer and P. reticulatum) in addition to describing three new species (P. magdaleniatum, P. metaense and P. orinocoense). The eight species are distinguished from each other by colour pattern and differences in bone structure.The exact number of species out of these eight imported for the aquarium trade is unknown since the large majority of the fish imported for the trade are very young fish that are difficult to identify with certainty. According to the authors: “...slight pattern and shape differences may indicate that more than one species is imported.”

Pseudoplatystoma corruscans
Pseudoplatystoma corruscans is known from the Paraná and São Francisco rivers in Argentina, Brazil, Paraguay and Uruguay. It is distinguished from congeners in having the sides of the body covered with large spots distributed regularly in six to eight rows and four to thirteen pale vertical bars. Other distinguishing characters include: adipose fin with 5–10 or no spots, caudal fin with few spots, 44–47 vertebrae and surrounding region of both dorsal and ventral procurrent caudal rays with no spots.The maximum recorded size of this species is 1140 mm TL.
This just one type of that species of Pseudoplatystoma, do you get interest in fishes
more information please click and you can share your hobby in comments TQ:

2 comments:

Anonymous said...

special...does it taste haha..

Anonymous said...

It's amazing!!! I think it's great they breed and we can maintain the population of animals in capitivity"