Costa, W. J. E. M., 2008
Rivulus jurubatibensis, a new aplocheiloid killifish from the southeastern Brazilian coastal plains (Cyprinodontiformes: Rivulidae)Abstract
Rivulus jurubatibensis, a new species of the Rivulus santensis group, from a coastal swamp close to the Lagoa do Pires, Quissamã, Rio de Janeiro, southeastern Brazil, is described. It is distinguished from all other species of the R. santensis group by having fewer scales in the longitudinal series. Rivulus jurubatibensis is considered to be closely related to R. nudiventris by both sharing two unique color patterns: caudal fin light yellow with a broad gray stripe on the whole fin margin in males and a small horizontally elongated black spot on the dorsal portion of the caudal-fin base in females. Rivulus jurubatibensis is distinguished from R. nudiventris by the presence of pelvic fin and by having fewer caudal-fin rays and fewer anal-fin rays.
Costa, Wilson J. E. M.
Ichthyol. Explor. Freshwaters, Vol. 19, No. 2, pp. 135-140, 2008