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Paralytic shellfish poisoning (PSP) is one of the four recognized syndromes of shellfish poisoning, which share some common features and are primarily associated with bivalve mollusks (such as mussels, clams, oysters and scallops). These shellfish are filter feeders and accumulate neurotoxins, chiefly saxitoxin, produced by microscopic algae ...
Osmotic shock or osmotic stress is physiologic dysfunction caused by a sudden change in the solute concentration around a cell, which causes a rapid change in the movement of water across its cell membrane. Under hypertonic conditions - conditions of high concentrations of either salts, substrates or any solute in the supernatant - water is ...
Fish fulfill several criteria proposed as indicating that non-human animals experience pain. These fulfilled criteria include a suitable nervous system and sensory receptors, opioid receptors and reduced responses to noxious stimuli when given analgesics and local anaesthetics, physiological changes to noxious stimuli, displaying protective motor reactions, exhibiting avoidance learning and ...
In the Pen-T’so Kang Mu (Index Herbacea or The Great Herbal by Li Shih-Chen, 1596) some types of the fish Ho-Tun (the current Chinese name for tetraodon) were also recognized as both toxic yet, at the right dose, useful as part of a tonic. Increased toxicity in Ho-Tun was noted in fish caught at sea (rather than river) after the month of March.
Fish surgeons can also adjust the buoyancy of the fish by placing a stone in the swim bladder or performing a partial removal of the bladder. [ 2 ] In order to prevent this disease, keep the tank as clean as possible, make sure the temperature is slightly higher than normal to aid in digestion, and, most importantly, feed the fish highly ...
Gas bubble disease. Gas bubble disease is a disease of fish that are exposed to water supersaturated with natural gases like oxygen, carbon dioxide, or nitrogen. [1] Bubbles of gas may form in the eyes, skin, gills, and fins. [2] It becomes prominent whenever there is a change in temperature and pressure in environments, aquatic turbulence, and ...
Sebastodes ruberrimus (Cramer, 1895) Sebastes ruber Ayres, 1854. The yelloweye rockfish (Sebastes ruberrimus) is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae and one of the biggest members of the genus Sebastes. Its name derives from its coloration.
Ammonia poisoning is a common fish disease in new aquariums, especially when immediately stocked to full capacity. Ideally, the level of ammonia (NH 3) and ammonium compounds (i.e. those containing NH 4+) in fish tanks should be zero. Although trace amounts are generally harmless, they can still lead to problems over time. [1]