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A new unique Hyphessobrycon sp. tetra

By Leonard Ho - Posted Nov 16, 2015 09:00 AM
This is Hyphessobrycon clavatus, a new tetra from Peru, South America. Although there are 140 species of Hyphessobrycon, remarkably no other known tetra in this genus resembles H.clavatus.
A new unique Hyphessobrycon sp. tetra

Hyphessobrycon clavatus. Photo Credit: D. Bork

Hyphessobrycon clavatus is small even by tetra standards.  Its adult size is about 30mm (1.1 inch).  H.peruvianus may be its closest congenor, though H.clavatus is visibly different thanks to a more pronounced black anterior longitudinal band, white tips on all its fins, and more variance in colors.

The new tetra species is described from Peru in the open access journal Vertebrate Zoology.

Journal Reference: Zarske, Axel (2015). Hyphessobrycon clavatus  spec. nov. – ein neuer Salmler  aus Peru (Teleostei: Characiformes: Characidae). Vertebrate Zoology

Hyphessobrycon_clavatus2.jpgA pair of Hyphessobrycon clavatus.  Photo ccredit: H.J. Richter

Hyphessobrycon_clavatus3.jpgWhy not?  A x-ray look inside Hyphessobrycon clavatus

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.


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