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A new genus and species of tetra: Phycocharax rasbora

By Leonard Ho - Posted Feb 22, 2017 09:00 AM
A recent survey of rio Braço Norte (Brazil) discovered a new, colorful tetra that couldn't be assigned to any known genus, so a new one was created. Meet the new genus Phycoharax, new species P. rasbora.
A new genus and species of tetra: Phycocharax rasbora

Male Phycocharax rasbora

Tetras are one of the world's most species rich family of fish (over 1,000 species).  Now we can add another species - and genus - to the family.  Phycocharax rasbora is a tetra discovered from a dammed portion of rio Braço Norte, a blackwater tributary with muddy organic substrate that is rich with algae. The new species is highly abundant here.

The males and females are sexually dimorphic; the males are considerably more colorful with lots of dull to bright red "flecking" throughout its body, notably the eyes and belly.

Phycocharax rasbora is described in PLOS.

Female Phycocharax rasbora
Female Phycocharax rasbora

Author: Leonard Ho
Location: Southern California

I'm a passionate aquarist of over 30 years, a coral reef lover, and the blog editor for Advanced Aquarist. While aquarium gadgets interest me, it's really livestock (especially fish), artistry of aquariums, and "method behind the madness" processes that captivate my attention.

Website: http://www.advancedaquarist.com.

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