A comparison of the effect of alternating current electronarcosis, rectified current electronarcosis and chemical anaesthesia on the blood physiology of the freshwater bream Oreochromis mossambicus (peters)—III. The effect on the plasma electrolytes Ca2+, Na+ and K+ and on the osmotic pressure of the blood

A comparison of hematology, plasma chemistry, and injuries in Hickory shad (Alosa mediocris) captured by electrofishing or angling during a spawning run

“…Changes in potassium concentration can vary considerably among fish species and types of electrical currents. Decreased plasma potassium was accompanied by increased potassium concentration in the muscle of Rainbow trout ( Oncorhyunchus mykiss ) exposed to alternating current, while plasmatic potassium increased following exposure to pulsed direct current in Mozambique tilapia ( Oreochromis mossambicus ) . Among 4 species exposed to 3 passes of pulsed direct current, plasmatic potassium increased significantly in Brook trout ( Salvelinus fontinalis ) and Green Sunfish ( Lepomis cyanellus ), decreased significantly in Channel catfish ( Ictalurus punctatus ), and did not change significantly in Rainbow trout .…”