STUDY ON THE COLLECTION OF FRESH-WATER FISHES FROM EASTERN CUBA WITH TAXONOMICAL NOTES

The authors studied a collection comprising 745 individuals of freshwa ter fishes sampled in 34 localities of eastern Cuba (earlier province Oriente) and the following species were determined: Cyprinodon variega tus var. riverendi, Gambusia punctata, G. bucheri, Girardinus metallic us, Dactylophallus denticulatus, Poecilia reticulata, Limia vittata, A lepidomus evermanni, Ophisternon aenigmaticum, Anguilla rostrata, Eleo tris pisonis, Gobiomorphus dormitor, Dormitator maculatus, Sicydium pl umieri and Oostethus lineatus. In this material classified according t o localities highest frequencies were exihibited by the species G. buc heri (44.1%). G. punctata (41.2%), Limia vittata (26.5%) and D. dentic ulatus (20.6%), the remaining species exhibited frequencies lower than 15%. In all the species determined Jaccard index used for comparing p rovince Guantanamo with the remaining provinces of eastern Cuba equall ed 33.3%; for the same regions compared this index was distinctly high er if calculated for species of the family Poeciliidae only (66.7%). I n the region under study species belonging to the Gambusia punticulata complex were unequivocally determined to belong to hubbsi forms and t heir new nomenclatorial and taxonomic conception was suggested contain ing one valid species (Gambusia bucheri) and three subspecies (G. b. b ucheri, G. b. baracoana and G. b. monticola). As far as the species Da ctylophallus denticulatus is concerned, in the R. Guantanamo, R. Guaso and R. Yateras systems its populations were found to bear characteris tics of the subspecies D. d ramsdeni. In westward direction they exhib it intermediary characteristics and the populations can be evaluated a s natia. In 2 new localities lying in the easternmost part of this reg ion we found the species Poecilia reticulata which cannot unequivocall y be regarded as introduced.