Actually fish should never need to be removed from the tank when you're doing routine maintenance. If they have to be then you're over cleaning and/or your tank is too small!
In a healthy established filtered tank you only need to do 20% water changes once a week, the fish stay put. Constantly netting them and moving them about causes extreme stress and can kill them.
If your tank is unfiltered then it's not suitable for fish.
A fish will most likely die if you put a cleaning agent in its fish bowl without removing the fish. You should remove your fish with a net and place it in another safe container until fish bowl is clean.
you get a net to take out the fish and put it in a container while you're cleaning the bowl and put the fish back in when your done :) hope I helped :)
you have a net and scope them out and put them in a bucket on bowl with some water from the tankthen once your done cleaning you put your fish back into the water
An hour after the water is being cleaned by the filter than its safe to put them in.
In a Bowl!
http://takemefishing.org/fishing/fishopedia/preparing-your-catch/cleaning-your-fish/
The only instrument that you need when cleaning a fish is a knife. You can clean a fish anywhere as long as you have water. Some places have restrictions on where you can clean a fish.
If it is all over the rocks and walls it is time to put the fish in the small tank they came in while you do a full cleaning then put them back in. if it isn't to the full cleaning point (I full clean mine every 1-2 months) then you can buy algae scrubbers that you can use while the fish are in the tank, or if isn't that thick algae you can buy an algae eating fish.
They need to ALWAYS be in there tank with special chemicals :)
The cast of Cleaning the Fish - 2013 includes: Putri Ayudya as Ajeng Aryadila Yarosairy as Dimas
you can put a put a clown fish or a angel fish but you have to have a lage a place to hold the fish because angel fish a a little territorial
trobling