Scientists from Brazil and Argentina have described a new species of whiptail catfish in the latest issue of the Journal of Fish Biology.
Named Rineloricaria isaaci by Monica Rodriguez and Amalia Miquelarena after Isac Isbrcker, a noted expert on plecos and Corydoras, the new species differs from congeners in having a long, naked area along the lateral part of the snout and greatly lengthened pectoral and pelvic fins in nuptial males.
Rineloricaria isaaci is known from the Uruguay River drainage in Argentina and Uruguay, where it inhabits watercourses with clear water, rocky and sandy bottom, with irregularly distributed small stones, cobbles and boulders.
For more information, see the paper: Rodriguez, M and A Miquelarena (2008) Rineloricaria isaaci (Loricariidae: Loricariinae), a new species of loricariid catfish from the Uruguay River basin. Journal of Fish Biology 73, pp. 1635"1647.