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Adult Siamese fighting fish (Betta splendens) with velvet disease. Oodinium is a genus of parasitic dinoflagellates. Their hosts are salt- and fresh-water fish, causing a type of fish velvet disease (also called gold dust disease). One species has also been recorded on various cnidarians. [2]
VHS disease in a gizzard shad. Viral hemorrhagic septicemia (VHS) is a deadly infectious fish disease caused by Viral hemorrhagic septicemia virus. It afflicts over 50 species of freshwater and marine fish in several parts of the Northern Hemisphere. [1] Different strains of the virus occur in different regions, and affect different species.
The following is a list of aquarium diseases. Aquarium fish are often susceptible to numerous diseases, due to the artificially limited and concentrated environment. New fish can sometimes introduce diseases to aquaria, and these can be difficult to diagnose and treat. Most fish diseases are also aggravated when the fish is stressed.
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. The disease can progress slowly throughout an infected farm and, in the worst cases, death rates may approach 100 per cent. It is also a threat to the dwindling stocks of wild salmon.
The fish's eye is about 1.5–2 times the length of its head, a distinctive feature of African lampeyes. The surface and scales have a bluish tint with a yellow hue or outline on the body and the outer edges of the dorsal, caudal, and anal fins.
The best known Betta species is B. splendens, commonly known as the Siamese fighting fish and often kept as an aquarium pet. Characteristics All Betta species are small fishes, but they vary considerably in size, ranging from under 2.5 cm (1 in) total length in B. chanoides to 14 cm (5.5 in) in the Akar betta ( B. akarensis ).
It is a type of fluke infecting the eyes of some species of fish, altering their movement patterns to suit its needs at different stages of development. [2] The parasite infects snails and birds, sexually reproducing in the latter (its primary host) and asexually in the former (its first intermediate host), as well as many species of fish (its second intermediate host). [3]
Print/export Download as PDF; Printable version; In other projects ... Pages in category "Fish diseases" The following 35 pages are in this category, out of 35 total.