The phylogenetic relationships and classification of the freshwater fish order Cypriniformes,
like many other species-rich groups of vertebrates, has evolved over time with some …

Analysis of zoogeographic, paleogeographic, and molecular data has shown that the
ancestors of many fresh-and brackish-water cold-tolerant hydrobionts of the Mediterranean …

There are particular challenges in defining the taxonomic status of recently radiated groups
due to the low level of phylogenetic signal. Members of the Salmo trutta species-complex …

Although aquatic macroinvertebrates and freshwater fishes are important indicators for
freshwater quality assessments, the morphological identification to species-level is often …

The Bemisia tabaci species complex is a group of tropical–subtropical hemipterans, some
species of which have achieved global distribution over the past 150 years. Several species …

The Oxynoemacheilus bergianus species group is revised based on tree topology (ML, NJ,
MP), distance (K2P and ASAP) and Poisson tree process analyses of DNA barcode data …

The genus Phoxinus is comprised of at least 15 currently recognized species inhabiting
Eurasia. Morphological traits have been traditionally used to delineate species in Phoxinus; …

Massive fish introductions have taken place throughout much of the world, mostly over the
last 70 years, and present a major threat to the genetic diversity of native fishes …

Fishes are, by far, the most diverse group of vertebrates. Their classification relies heavily on
morphology. In practice, the correct morphological identification of species often depends on …

The large number of cryptic species and extensive intraspecific phenotypic plasticity among
freshwater fishes pose a challenge to the correct assessment of diversity within these taxa …