Related Experiment Video
Updated: Jun 11, 2025

Basic Methods for the Study of Reproductive Ecology of Fish in Aquaria
Published on: July 20, 2017
Just keep exploring: Genetics of fish niche adaptation
1Department of Integrative Biology and Physiology, University of California Los Angeles, 610 Charles E. Young Drive South, Los Angeles, CA, 90095, USA. kmmunley@ucla.edu.
Abstract:
Although the diversification of species has fascinated researchers for centuries, we know remarkably little about how behavior influences niche adaptation and the genetic mechanisms through which behavior evolves. In their recent study, Sommer-Trembo et al. (Science, 384, 470-475, 2024) demonstrate a critical role for the regulatory gene cacng5b in modulating phenotypic variation in exploratory behavior in one of the most exceptional adaptive radiations: the African cichlid fishes of Lake Tanganyika.
Related Concept Videos
Osmoregulation in Fishes
Ecological Niches
Genetics of Speciation
Gene Flow
Background and Environment Affect Phenotype
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
Speciation Rates

