fish dying continuously

@ RAM
ram tell me if i put my remaining fishes in a bucket , will they remain safe??
and thank you very much information was quiet helpful, i feel very sad for the poor animals which died from my ignorance.

@ ADMINISTRATOR
i just bought a conditioner , and will use it as adviced.
i have no heater at the moment because temperature in my state is very hot, and it is the reason for high temperature of water in my tank.
and thx i hope i do my best to keep other fishes alive as i feel very sad each time i came to know about a dead fish.
il keep in touch for more help an thank you very much