To survive, fish must maintain ionoregulatory and osmoregulatory homeostasis during changes in environmental salinity. In hypersaline water, fish must actively excrete salts and drink water to counterbalance the passive ...

Interspecific hybridization occurs when two species successfully mate to produce offspring. This phenomenon is relatively common in nature and can produce hybrids with advantaged, disadvantaged, or intermediate physiology ...

Often the most striking displays of colour in animals arise from interactions during mating. Nuptial colouration is exclusively associated with mating and typically functions in either female mate choice by signalling male ...

The majority of vertebrates reproduce sexually, but a small percentage can reproduce clonally (asexual reproduction). The Common killifish (Fundulus heteroclitus) and Banded killifish (Fundulus diaphanus) are found along ...