The increase in heat causes the digestive process to speed up, along with the fish’s efforts to absorb enough oxygen. A fish that lives in water that is 75 degrees will eat up to five times the amount of food as the same fish living in 58-degree water. Their metabolism increases, causing an increased demand for food and oxygen. But when the water is warm, fish become extremely active. When the water in a fish tank is too cold, your fish will minimize their movement and may even appear catatonic.
Their inability to get sufficient oxygen from the water they live in causes death by suffocation. If the water temperature in your tank gets higher than 90☏(32☌), your fish may be in danger of dying. On the other hand, warm water has less oxygen in it than cool water. The warmer the water gets, the more active fish become, and they then need increasing amounts of oxygen to survive. Therefore, it is your responsibility as a fish owner to do everything you can to keep the water in your tank or aquarium at a comfortable temperature for your fish.įish breathe by drawing oxygen from the water they live in. There is no way for them to escape to a cooler location if they get too hot. But in an aquarium, there is nowhere for the fish to go. That is how they cool themselves during the hottest times of the day. If you look carefully, you will see them congregating near the edges of the water, hiding among vegetation growing near the shore. Have you ever observed fish in a public pond or at the zoo? Unless people are throwing them crumbs, you usually won’t see many fish near the surface on very warm days. The sophistication of the equipment you purchase depends again on the size of the tank, and how many fish you want to keep.
Some fish owners create circulation and oxygen production artificially with a pump and filter. Many factors affect the temperature in your aquarium water: the volume and depth of the tank, the water quality, the room temperature, and how much water circulation and surface agitation there is.
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