Cichlid fishes are a very diverse and species-rich family of teleost fishes that inhabit lakes
and rivers of India, Africa, and South and Central America. Research has largely focused on …

African cichlid fishes of the Cichlidae family are a group of teleosts important for aquaculture
and research. A thriving research community is particularly interested in the cichlid …

Identifying genetic loci underlying trait variation provides insights into the mechanisms of
diversification, but demonstrating causality and characterizing the role of genetic loci …

Evolutionary novelties—derived traits without clear homology found in the ancestors of a
lineage—may promote ecological specialization and facilitate adaptive radiations. Examples …

Understanding the mechanisms leading to new traits or additional features in organisms is a
fundamental goal of evolutionary biology. We show that HOXDB regulatory changes have …

The dorsal and anal fins can vary widely in position and length along the anterior–posterior
axis in teleost fishes. However, the molecular mechanisms underlying the diversification of …

Background Syngnathids are a highly derived and diverse fish clade comprising the
pipefishes, pipe‐horses, and seahorses. They are characterized by a plethora of iconic traits …

Neofunctionalization of duplicated gene copies is thought to be an important process
underlying the origin of evolutionary novelty and provides an elegant mechanism for the …

The median fins of modern fish that show discrete forms (dorsal, anal, and caudal fins) are
derived from a continuous fold-like structure, both in ontogeny and phylogeny. The median …

Sexually mature female guppies (Poecilia reticulata) were exposed to environmentally
relevant concentrations (20, 200, and 2000 ng/L) of 17β-trenbolone for four weeks. As …