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The genus Anisakis was defined in 1845 [2] by Félix Dujardin as a subgenus of the genus Ascaris Linnaeus, 1758.Dujardin did not make explicit the etymology, but stated that the subgenus included the species in which the males have unequal spicules ("mâles ayant des spicules inégaux"); thus, the name Anisakis is based on anis-(Greek prefix for different) and akis (Greek for spine or spicule).
Enypniastes [a] is a genus of deep-sea sea cucumber.It is monotypic, being represented by the single species Enypniastes eximia.Due to its unique appearance, the species has been dubbed the headless chicken fish, headless chicken monster, and the Spanish dancer.
Unlike mammals, the red blood cells of fish have DNA, and can become infected with viruses. The fish develop pale gills, and may swim close to the water surface, gulping for air. However, the disease can also develop without the fish showing any external signs of illness, the fish maintain a normal appetite, and then they suddenly die.
Archosargus probatocephalus has an oval shaped, deep, laterally compressed body with a small blunt head, the dorsal and ventral profiles of the head being convex. It has moderately sized eyes, a small horizontal mouth and the preorbital bone overlaps the rear of the maxilla. The teeth at the front of the jaw are broad and flattened, the upper ...
Anisakis simplex, known as the herring worm, is a species of nematode in the genus Anisakis. Like other nematodes, it infects and settles in the organs of marine animals, such as salmon , mackerels and squids .
Urechidae (commonly known as "fat innkeeper" or "penis fish") [3] [4] is a family of spoonworms in the subclass Echiura. The only genus in the family is Urechis , which has four species. Species
The silver cyprinid is the only native fish species which has remained abundant in Lake Victoria since the introduction of the Nile perch, Lates niloticus and Nile tilapia Oreochromis niloticus to the lake. These two species have almost wiped out the ende zooplankton eating haplochromine cichlids thus reducing competition for this species. [5]
In Europe the fish has been called the "silver of the sea", and its trade has been so significant to many countries that it has been regarded as the most commercially important fishery in history. [17] Environmental Defense have suggested that the Atlantic herring (Clupea harengus) fishery is one of the more environmentally responsible ...