Why are my guppies staying in one tank corner? Are they stressed?

Question

I have 8 guppies and there all in one corner is that normal

Angel Alvarado, LVT · Accepted Answer

Check the water chemistry and water temperature. If it is a new tank, it may not be properly cycled and could be undergoing and ammonia or nitrite spike. Either can drive fish to the surface or to one area of the tank. Submit a water sample for testing or use a liquid master test kit at home. Aim for 0 ppm ammonia and nitrites with nitrates at 40 ppm or less. Water temp should be in the mid 70s F. Perform a partial water change (30%) if necessary to stabilize chemistry and maintain water quality. Use only aged or conditioned water that is temperature matched o prevent stress or shock. Survey the area around the tank to rule out negative stimuli such as bright/direct light or loud noises/vibrations. These can also stress fish and cause them to move as far away as possible. Make sure the tank is large enough to support 8 guppies. Overcrowding can cause stress and aggression. Lastly, provide plenty of cover in the form of live or artificial plants. Guppies prefer cover and guppy fry (babies) need it or they will get eaten.

Why are my guppies staying in one tank corner? Are they stressed?

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