Breeding Angelfish in Captivity. Angelfish do not need any special setup to reproduce in captivity. If the tank is large enough for the fish it contains, with a male and female of breeding age, they will likely spawn. Aquarium owners who wish to encourage spawning can provide their angelfish with a spawning slate. This allows the owner to remove the eggs to place them in another tank if desired. This can encourage faster breeding, as fish that are not caring for their young can breed again within 10 days.
Action Potential An all-or-none electrical event (neural impulse) in an axon or muscle fibre in which the polarity of the membrane potential is rapidly reversed and re-established. Action potentials begin at one end of the axon of a neurone and move along the axon to the other end.
As explained above, an action potential is due to various ionsâ motion into and out of the cell, which depolarizes the membrane potential or the voltage across the membrane. This ion current happens through the so-called Ion channels.