New tetra named Hyphessobrycon sebastiani


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Ichthyologists from Colombia and the USA have named a new species of tetra in the genus Hyphessobrycon from Colombia.

Carlos Garcia-Alzate, Cesar Roman-Valencia and Donald Taphorn published the description of Hyphessobrycon sebastiani in a recent issue of the journal Zootaxa.  

The authors distinguish the new species, known from the from the San Juan River drainage of the Pacific versant of Colombia, from congeners that share two humeral spots and no caudal blotch in having: five unbranched and 25 to 28 branched anal–fin rays; 12–13 branched pectoral–fin rays; 35–37 scales in the longitudinal series; eight scales between the lateral line and the dorsal–fin origin; 12–13 predorsal scales; 13–18 pored lateral–line scales and three pairs of large bony hooks on anal fin of mature males.  

The species is named after the brother of the first author, and its diet was found to be composed predominantly of insects.

For more information, see the paper: Garcia-Alzate, CA, C Roman-Valencia and DC Taphorn (2010) A new species of Hyphessobrycon (Teleostei: Characiformes: Characidae) from the San Juan River drainage, Pacific versant of Colombia. Zootaxa 2349, pp. 55–64.