Blood parrots are tropical fish, yes they do need heaters.
No. Depending upon the climate you live in, tropical fish may need heaters if you live in a cool place and if you live in a warm place cold water fish may need coolers. Each species has its own requirements.
its for tropical fish and salt water fish. they need to have warm water to survive cause were they live is really warm waters
Typically heaters are needed for tropical fish tanks. However, if you could guarantee the room temperature where the tank is located will be maintained at the needed temperature for your fish, then you don't need a heater. Most tropical tanks need to be maintained at temperatures of 72 to 80 degrees Fahrenheit, depending on the types of fish in the tank.
No
Not all heaters can go inside a fish tank. The heater must be specifically made to be put in an aquarium. You can order one off the internet as long as it is made to be put in water or you can get one from your local fish or pet dealer. It would be better for a first time fish owner to get one from a pet dealer instead of the internet.
Eat Fish and buy heaters
yes
It is a fish that swims and if you are allergic to any type of fish then just don't eat any type of fish
The rule to follow for freshwater fish is 1 inch per gallon. For goldfish is it one fish per 10 gallons, and for bettas it is 1 fish per 1 gallon. Fish bowls really are not the best home for any fish. Fish need to be kept in tanks with heaters and fliters.
The water temperature varies with the type of fish, but normally it should be about 75 degrees. Most aquarium heaters do a good job of keeping the temperature at this point. If your fish get sick you may want to raise the temperature to about 82 degrees.
thermal heat