Featured Research

from universities, journals, and other organizations

Tiny new catfish species found in Rio Paraíba do Sul basin, Brazil

Date:
July 9, 2013
Source:
Pensoft Publishers
Summary:
A new diminutive species of catfish was found in Rio Paraíba do Sul basin in Brazil. The genus to which the new Pareiorhina hyptiorhachis belongs represents a group of species endemic to Brazil. Although the new species is only around 3 cm in length it is still larger than the smallest catfish that is only 1 cm when sexually mature.

This image shows the newly discovered catfish Pareiorhina hyptiorhachis.
Credit: Gabriel de Souza da Costa e Silva; CC-BY 3.0

Scientists discovered a tiny new species of catfish in the waters of Rio Rio Paraíba do Sul basin, Brazil. The new species Pareiorhina hyptiorhachis belongs to a genus of armored catfishes native to South America where and found only in Brazil. These peculiar fish get their name from their strange elongated mouth barbels that remind of cat's whiskers. The new species is distinguished from others species of the genus by the presence of a conspicuous ridge on the trunk posterior to the dorsal fin (postdorsal ridge).

Related Articles


The description of the diminutive new species was published in the open access journal Zookeys.

Pareiorhina hyptiorhachis is only about 3-3.5 cm in length, making one of the smallest representatives of the catfish order. Although the new species is only the size of a decorative fish, there are even smaller representatives in the group. Some of the smallest species of Aspredinidae and Trichomycteridae for example reach sexual maturity at only 1 cm in total.

On the other side of the scale is the wels catfish whose representatives can reach more than 2.5 metres (8.2 ft) in length and sometimes exceeded 100 kilograms (220 lb). This fish has been also recorded to feed on frogs, rats, mice and even some aquatic birds. Many of the large catfish species are farmed or fished for food thus being of significant scientific importance. Small representatives, on the other hand, are often used as aquarium decorative fish.


Story Source:

The above story is based on materials provided by Pensoft Publishers. The original story is licensed under a Creative Commons License. Note: Materials may be edited for content and length.


Journal Reference:

  1. Gabriel da Costa e Silva, Fábio Roxo, Claudio Oliveira. Pareiorhina hyptiorhachis, a new catfish species from Rio Paraíba do Sul basin, southeastern Brazil (Siluriformes, Loricariidae). ZooKeys, 2013; 315: 65 DOI: 10.3897/zookeys.315.5307

Cite This Page:

Pensoft Publishers. "Tiny new catfish species found in Rio Paraíba do Sul basin, Brazil." ScienceDaily. ScienceDaily, 9 July 2013. <www.sciencedaily.com/releases/2013/07/130709115858.htm>.
Pensoft Publishers. (2013, July 9). Tiny new catfish species found in Rio Paraíba do Sul basin, Brazil. ScienceDaily. Retrieved February 26, 2015 from www.sciencedaily.com/releases/2013/07/130709115858.htm
Pensoft Publishers. "Tiny new catfish species found in Rio Paraíba do Sul basin, Brazil." ScienceDaily. www.sciencedaily.com/releases/2013/07/130709115858.htm (accessed February 26, 2015).

Share This


More From ScienceDaily



More Plants & Animals News

Thursday, February 26, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Amazon Keeps Its Green Thanks To The Sahara Desert

The Amazon Keeps Its Green Thanks To The Sahara Desert

Newsy (Feb. 25, 2015) — Satellite data shows the Amazon rainforest supports its lush flora with a little help from Sahara Desert dust. Video provided by Newsy
Powered by NewsLook.com
Mayor Says District of Columbia to Go Ahead With Pot Legalization

Mayor Says District of Columbia to Go Ahead With Pot Legalization

Reuters - News Video Online (Feb. 25, 2015) — Washington&apos;s mayor says the District of Columbia will move forward with marijuana legalization, despite pushback from Congress. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Marijuana Nowhere Near As Deadly As Alcohol: Study

Marijuana Nowhere Near As Deadly As Alcohol: Study

Newsy (Feb. 25, 2015) — A new study says marijuana is about 114 times less deadly than alcohol. Video provided by Newsy
Powered by NewsLook.com
Fox With Horrifying Injury Rescued and Released Back Into the Wild

Fox With Horrifying Injury Rescued and Released Back Into the Wild

RightThisMinute (Feb. 25, 2015) — This wounded fox knew what she was doing when she wandered into the yard of a nature photographer. The photographer got "Scamp" immediately in the hands of Wildlife Aid and she was released back into the wild in no time. Video provided by RightThisMinute
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins