Papers/Abstracts

Rivulus tomasi (Teleostei: Cyprinodontiformes: Rivulidae), a new killifish from Tobogán de la Selva, middle Orinoco river drainage in the Amazonas Territory, southwest Venezuela

F. B. M. Vermeulen, S. Valdesalici and J. R. Garcia-Gil

aqua, International Journal of Ichthyology, pp. 187-192, Volume 19, Issue 4 – 25 October 2013

Abstract
Rivulus tomasi is described from Tobogán da la Selva, a tributary of the middle Rio Orinoco south of Puerto Ayacucho in the Amazonas Territories, southwest Venezuela. It is similar to R. amanapira, R. rectocaudatus, R. tecminae and R. staecki in having a truncate caudal fin, but differs by a unique combination of character states: tip of pelvic fin reaching between base of 4th and 5th anal fin ray in males, and 39-42 scales in longitudinal series. Rivulus tomasi differs from other Rivulus spp. (except R. amanapira and R. uakti) by unique caudal fin coloration.

Full Text | PDF (116 KB)

REFERENCES

COSTA, W. J. E. M. 2001. The neotropical annual fish genus Cynolebias (Cyprinodontiformes: Rivulidae): phylogenetic relationships, taxonomic revision and biogeography. Ichthyological Exploration of Freshwaters 12 (4): 333-383.

COSTA, W. J. E. M. 2011. Phylogenetic position and taxonomic status of Anablepsoides, Atlantirivulus, Cynodonichthys, Laimosemion and Melanorivulus (Cyprinodontiformes: Rivulidae). Ichthyological Exploration of Freshwaters, 22 (3): 233-249,

HRBEK, T., DE DEUS, C. P. & FARIAS, I. P. 2004. Rivulus duckensis (Teleostei; Cyprinodontiformes): new species from the Tarumã basin of Manaus, Amazonas, Brazil, and its relationship to other neotropical Rivulidae. Copeia 2004 (3): 569-576.

HUBER, J. H. 1992. Review of Rivulus, ecobiogeography – relationships. Société Française d’Ichthyologie, Paris.

HUBER, J. H. 1998. A Comparison of Old World and New World Tropical Cyprinodonts. A parallel Outlook of similar and distinctive Characteristics regarding Distribution, Evolution, Ecology, Behavior, Morphomeristics, Genetics and Color Pattern. Société Française d’Ichthyologie: 109, 17 Figs.

HUBER, J. H. 2012. Reappraisal of phylogeny of Rivulus and its Allied focused on External Characters. Killi Data Series 2012: 9-25

LASSO-ALCALÁ, O. M., TAPHORN, D. C., LASSO, C. A. & LEÓN-MATA, O. 2006. Rivulus sape, a new species of killifish (Cyprinodontiformes: Rivulidae) from the Paragua River system, Caroní River drainage, Guyana Shield, Venezuela. Zootaxa, 1275: 23, Figs 1, 2, 3.

VERMEULEN F. B. M., SUIJKER, W. H. & COLLIER, G. E. 2012. Laimosemion paryagi Cyprinodontiformes: Aplocheiloidei: Rivulidae), a new species from the upper Mazaruni river drainage of Western Guyana. aqua, International Journal of Ichthyology 18 (4): 181-189, Fig. 8, Table I. 

Previous post

Fishes of Bermuda

Next post

Paracheilinus rennyae, a new species of flasherwrasse (Perciformes: Labridae) from southern Indonesia

The Author

Rossella

Rossella

No Comment

Leave a reply