#fish genus

• Aphareus — A genus of predatory marine fish in the family Lutjanidae (commonly known as deepwater snappers), distributed throughout the tropical regions of the Indian and Pacific Oceans. In mythology, Aphareus represents the name of a legendary king of Messenia in Ancient Greece, father of the twins Idas and Lynceus.
• Astacus — Lowercase spelling form for the taxonomic genus Astacus (freshwater crayfish); used in regular text or in binomial species names (such as Astacus astacus, the European crayfish) to denote decapod crustaceans with a rigid exoskeleton and large claws. It represents a fundamental morphological unit in the study of European freshwater fauna, serving as an excellent ecological indicator for the purity of running waters.