Membrane Potentials / Hyperkalemia Effects of changing K + concentration altering either the intracellular or extracellular K + concentration has substantial effects on the resting membrane potential, and therefore on the ability of neurons and muscle cells to reach action potential threshold
The most common side effects of fish oil supplements are bloating, belching, gas and diarrhea. Taking a fish oil supplement also can cause loose stools, nosebleeds and rashes, according to Medline Plus. The supplement also can leave a fishy smell on your breath. The UMMC also notes that taking a time-release fish oil supplement may cut back on intestinal symptoms.
When water is not properly maintained, fish may develop popeye disease, a life-threatening condition that causes the eyes to bulge out of the head. Bettas stop eating in water that is too cold, and in very cold water they may not have access to enough oxygen.