Hemigrammocapoeta menderesensis is distinguished from all other species of Hemigrammocapoeta in Anatolia by the following combination of characters (none unique to the species): lateral line incomplete; 6-17 perforated scales and 36-41 +1-2 scales in lateral series; 7½-8½ scale rows between lateral line and dorsal-fin origin, 3-4 scale rows between lateral series and anal-fin origin; dorsal fin...

Two of the main drivers speciation among aquatic vertebrates are physical isolation (e.g., lakes and streams) micro-niche availability tropical reefs). In both regards, mesopelagic domain open ocean, Earth’s second largest cumulative ecosystem (behind only bathypelagic domain), would seem retardant. Ocean circulation makes rare on contemporary geological time/space scales, lack substrate preclu...

Yearling common barbel (Barbus barbus L.) were fed four purified casein-based diets for 6 weeks in outdoor cages. Besides control diet, these were supplemented with 0.3 mg kg(-1) dw selenium (Se) from sodium selenite, or 0.3 and 1.0 mg kg(-1) from Se-enriched microalgae biomass (Chlorella), a previously untested Se source for fish. Fish mortality, growth, Se accumulation in muscle and liver, an...

the geometric morphometrics method was applied to study the morphological differences in 95 specimens of kura barbel (barbus lacerta, heckel 1834) collected from three riverine ecosystems of the sefidrud basin, viz. taleghan, totkabon and kloraz rivers.  for this purpose, the left sides of the specimens were photographed. then, 14 landmark-points were defined and digitized on 2d pictures using ...

Two hypogean species of genus Triplophysa are herein described from two subterranean tributaries the River Yangtze drainage in Guiyang City, Guizhou Province, China. wudangensis, new species, can be distinguished its congeners by combination following characters: eye reduced, with diameter 5.1-6.5% HL; interorbital width 33.1-35.8% body scaleless; lateral line complete; posterior chamber air bl...