The medium-sized barbs (< 115 mm SL) hitherto referred to Puntius filamentosus (Valenciennes, 1844) in southern India and Sri Lanka are among the most common cyprinids in the lowland rivers and reservoirs of these areas. They form an important part of the local food and ornamental fishery (Pethiyagoda, 1991; Talwar & Jhingran, 1991), and are easily recognised by the elongated, filament-like ext...

in the present study, some biological aspects of capoeta trutta (heckel, 1843) have been examined for the aim of future stock assessment, exploitation and conservational managements. a total of 103 fish specimens were collected seasonally from seymareh river, tigris basin, iran, in four seasons during 2011-2012. observed maximum age was 4 + in both sexes and sex ratio obtained as 1m:1.9f. analy...

Despite their great diversity and biological importance, evolutionary relationships among the endemic clade of East Asian Cyprinidae remain ambiguous. Understanding the phylogenetic history of this group involves many challenges. For instance, ecomorphological convergence may confound morphology-based phylogenetic inferences, and previous molecular phylogenetic studies based on single genes hav...

Many species of Schizothoracine, a subfamily of Cyprinidae, are highly endemic to the Qinghai-Tibetan Plateau (QTP). To characterize the adaptive changes associated with the Schizothoracine expansion at high altitudes, we sequenced tissue transcriptomes of two highland and two subhighland Schizothoracines and analyzed gene evolution patterns by comparing with lowland cyprinids. Phylogenetic tre...

We studied the morphology and shape variation of the palatal organ and chewing pad of sucker fishes, family Catostomidae. The palatal organ is a muscularized structure that forms a large mass on the roof of the posterior part of the buccopharyngeal cavity in cypriniform fishes. It functions in coordination with the branchial arches to separate food items from inorganic debris during feeding. Th...

Small variations in signalling pathways have been linked to phenotypic diversity and speciation. In vertebrates, teeth represent a reservoir of adaptive morphological structures that are prone to evolutionary change. Cyprinid fish display an impressive diversity in tooth number, but the signals that generate such diversity are unknown. Here, we show that retinoic acid (RA) availability influenc...