My angelfish is just laying on the bottom of the tank?

  my angelfish is laying there his fins are still moving and the current is somewhat strong in my tank nitrite level was .5 for 1 day is that why? he has been very stressed lately he had to switch tanks any ideas hes not dead? but he has been twitching for a long time before this?? why?
Angel fish are very sensitive to nitrite and ammonia they cant tolerate anything other than 0



What size is you tank was it cycled what are your ammonia readings?



Why is your Angel fish stressed i have huge filtration in my tank with my angel fish i have multiple breeding pairs and they don't care for the current from the filter



Angel fish can die if they get stressed i would be doing a large 50% water change and keep doing this until you have no nitrite in your tank



Edit .. the ammonia is your problem that is at a lethal amount you get ammonia for many reasons

1 Your tank is cycling

2 your tank is not cycled

3 your over feeding

4 your over stocked with fish and you have over loaded the bio load of the tank pets question and answers,www.5d2d.com



You need to do a 50% water change now and keep doing 50% water changes until the reading is at 0
U have an ammonia spike, maybe u overfeed/overstock and the angelfish is suffering although it looks like he's just laying at the bottom.
tell him to get a better job or at least one he likes better so he does not get so stressed, he might be takeing a cat nap for all that swimming ..