Can you have a fish tank without a heater?

Table of Contents

Freshwater fish tanks need heat or not according to the type of fish being kept. Cold-water specimens don’t require a heater, but not all freshwater fish can survive in cooler waters: some freshwater fish are tropical or sub-tropical.

How long can a fish tank go without a heater?

But they don’t do well at these low temperatures . They survive for over about 3 months ( winter) at the low temperatures.

What kind of aquarium fish do not need a heater?

10 Best Coldwater Fish That Don’t Need a Heater

Sunset Variatus Platy.
Celestial Pearl Danio.
Rainbow Shiner.
Hillstream Loach.
Endler’s Livebearer.
Clown Killifish.
Cherry Shrimp.
Dojo Loach.

Do I need a heater for tropical fish?

Tropical fish require a heater in their tank to maintain their water at the appropriate temperature. The general range for tropical aquariums is 75–80 degrees Fahrenheit. Left alone, the aquarium water temperature will eventually match the surrounding air temperature.

How can I keep my aquarium warm without a heater?

Cover the tank with a lid/ hood/canopy.
Use a thermometer to monitor the water temperature regularly.
Use stronger lights.
Add insulation layers.
Use a filter that’s not energy-efficient.
Use a heating mat (only for small fishbowl).
Blankets/thick towels if it’s an emergency situation.

Can cold-water fish live in a tropical tank?

Another side effect of keeping coldwater fishes at tropical temperatures is the much shorter lifespan that will arise due to the fish always being kept at unnaturally high metabolic rates. By keeping your coldwater fishes cool, they will enjoy a much longer, healthier life.

Can I cover my fish tank with a towel at night?

During winter, you should insulate your tank and all filtration by wrapping them in blankets, towels or cardboard. 1 Don’t forget to cover the top of your tank, but make sure you do not cut off the oxygen supply. Resist the urge to frequently check your fish.

Can you have a fish tank without a heater?