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...

page 373 Fish brains re ̄ect an enormous evolutionary radiation 374 Based on morphology: how conclusions on sensory orientation are reached 376 Structure of ®sh brains 378 Large-scale evolutionary patterns of ®sh brains 384 Functional diversi®cation 386 Cyprinidae Gadidae Flat®shes Cichlidae and other modern perciforms How environments shape brains: turbidity, benthos and the pelagic realms 393 ...

Bu çalışmada, Küçük Menderes Nehri’nin güncel balık türlerinin belirlenmesi amaçlanmıştır. Balık örneklemeleri, kaynaktan mansaba kadar, dört lotik ve beş lentik, dokuz istasyonda gerçekleştirilmiştir. Mevsimlik periyotlarda gerçekleştirilen örnekleme çalışması 2018 yılı içerisinde tamamlanmıştır. Örneklemeler, habitatlarda elektroşoker, lentik ise bentik ağlar tül ığrıp ile Çalışma sonucunda n...

A detailed morphological comparison of the currently recognized subspecies, Acrossocheilus iridescens longipinnis and A. i. iridescens, shows that there are differences in body coloration of juveniles and some osteological characters, in addition to the structure of the first branched dorsal-fin ray and the shape of the distal edge of the dorsal fin which are currently used to distinguish them....

A giant meront containing thousands of merozoites has been found in the intestinal epithelium of an adult specimen of white bream (Blicca bjoerkna). The taxonomic position of this unusual coccidian stage is discussed.

Saurogobio gracilicaudatus, originally described from the middle Yangtze River (Chang-Jiang in Chinese) basin at Yichang and Guanghua (now Laohekou), Hubei Province, South China, is here re-described, with particular concern for oromandibular structures in the mouth. It is uniquely distinguishable from all other species of Saurogobio in having a rostral cap with a slightly crenulated median por...

Background The objective of the present study was to determine the optimum dosage of probiotic in the diet of keureling fish ( Tor tambra) fry. MethodsLactobacillus casei from Yakult® was used as a starter, and enhanced with Curcuma xanthorrhiza, Kaempferia galanga and molasses. The mixture was fermented for 7 days prior to use as probiotic in a formulated diet containing 30% crude protein. Fou...

A new cyprinid species, Pseudobarbus skeltoni sp. nov, is described from material recently collected in the upper Riviersonderend River (a major tributary of the Breede River system) and the Krom River (a tributary of the Molenaars River in the upper Breede River) in the Cape Floristic Region of South Africa. The new species is readily distinguished from congeners, except P. burgi and P burchel...

Fishes currently assigned to Pethia gelius Hamilton from West Bengal are shown to belong to a closely-related group of three species: P gelius, its erstwhile synonym P canius Hamilton and a new species, P aurea. The three species are distinguished from all other species of Pethia by having the lateral line incomplete, with 3-4 pored scales; 20-26 scales in lateral series on body; ½4-5/l/2-3½ sc...

Labeo rosae, a species with a native range in Southern Africa, was discovered in the Congo basin by re-identification of two museum specimens previously identified as Labeo mesops. The occurrence of this species in the upper Congo implies a range extension of the species of more than 1000 km. Although the species' distribution is mirrored by that of some other Cypriniformes, its occurrence in t...