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Argulus foliaceus. Argulus foliaceus, also known as the common fish louse, is a species of fish lice in the family Argulidae. [1] It is "the most common and widespread native argulid in the Palaearctic" [2] and "one of the most widespread crustacean ectoparasites of freshwater fish in the world", considering its distribution and range of hosts. [3]
The scup (Stenotomus chrysops) is a fish that occurs primarily in the Atlantic from Massachusetts to South Carolina. [3] Along with many other fish of the family Sparidae, it is also commonly known as porgy. [4] Scup grow as large as 18 in (460 mm) and weigh 3–4 lb (1.4–1.8 kg), but they average 0.5–1.0 lb (0.23–0.45 kg).
Common names of fish can refer to a single species; to an entire group of species, such as a genus or family; or to multiple unrelated species or groups.Ambiguous common names are accompanied by their possible meanings.
Anadromous – fish that live their adult lives in the ocean but migrate up fresh water rivers to spawn. Examples are Pacific salmon. Fish that migrate in the opposite direction are called catadromous. Anoxic sea water – sea water depleted of oxygen. See hypoxia. Anoxic sediments – sediments depleted of oxygen.
The family Argulidae, whose members are commonly known as carp lice or fish lice, are parasitic crustaceans in the class Ichthyostraca. It is the only family in the monotypic subclass Branchiura and the order Arguloida , although a second family, Dipteropeltidae, has been proposed.
Corydoras acutus; Corydoras adolfoi; Corydoras aeneus [2]; Corydoras agassizii; Corydoras ambiacus; Corydoras atropersonatus; Corydoras axelrodi; Corydoras barbatus
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Fish were observed floating inverted completely motionless with the illicium hanging down stiffly in a slight arch in front of the fish. The illicium was hanging over small visible burrows. It was suggested this is an effort to entice prey and an example of low-energy opportunistic foraging and predation.