A new species of Hyphessobrycon (Characiformes, Characidae) from the upper Guaviare River, Orinoco River Basin, Colombia

• Published in: ZooKeys Vol. 668; no. 668; pp. 123 - 138
• Main Authors: García-Alzate, Carlos A, Urbano-Bonilla, Alexander, Taphorn, Donald C
• Format: Journal Article
• Language: English
• Published: Bulgaria Pensoft Publishers 01-01-2017
• Subjects: Characidae; Congeners; Distribution; Fish; Hyphessobrycon; Hyphessobrycon loretoensis; Identification and classification; Lateral line; Natural history; New species; River basins; Rivers; Teeth; Zoology; Colombia; Orinoco River; diversity; diversidad; Nuevo taxón; río Guaviare; Neotropical Ichthyology; New taxon; Ictiología Neotropical; Guaviare River
• ISSN: 1313-2989; 1313-2970
• DOI: 10.3897/zookeys.668.11489

is described from small drainages of the upper Guaviare River (Orinoco River Basin) in Colombia. It differs from all congeners by having a wide, conspicuous, dark lateral stripe extending from the anterior margin of the eye across the body and continued through the middle caudal-fin rays, and that covers (vertically) three or four horizontal scale rows. It also differs by having an orange-yellow stripe extending from the anterosuperior margin of the eye to the caudal peduncle above the lateral line in life. It differs from all other species of
that have a similar dark lateral stripe:
,
,
,
,
,
,
,
,
,
,
, and
in having only three or four pored scales in the lateral line, 21 to 24 lateral scales and six teeth in the inner premaxillary row.
differs from
in having seven to eight maxillary teeth (vs. three to four) and in having a longer caudal peduncle (12.4-17.0% SL vs. 4.6-8.0% SL). Additionally
can be distinguished from the other species of
with a dark lateral stripe from the Orinoco River Basin (
and
) in having two teeth in the outer premaxillary row (vs. three to four) and 10 branched pectoral-fin rays (vs. 11 to 12). It further differs from
by the length of the snout (17.6-22.8% HL vs. 9.9-15.2% HL) and by the length of the caudal peduncle (12.4-17.0% SL vs. 7.3-11.8% SL).